document.write( "Question 1118323: Find the final amount in the following retirement​ account, in which the rate of return on the account and the regular contribution change over time.\r
\n" ); document.write( "\n" ); document.write( "​$369 per month invested at 4​%, compounded​ monthly for 7 years;
\n" ); document.write( "then ​$603 per month invested at 6​%, compounded​ monthly, for 7 years.\r
\n" ); document.write( "\n" ); document.write( "What is the amount in the account after 14 ​years?
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Algebra.Com's Answer #733632 by Theo(13342)\"\" \"About 
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$369 per month invested at 4​%, compounded​ monthly for 7 years;
\n" ); document.write( "then ​$603 per month invested at 6​%, compounded​ monthly, for 7 years.
\n" ); document.write( "What is the amount in the account after 14 ​years?\r
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\n" ); document.write( "\n" ); document.write( "i am assuming that the future value of the first investment at 4% is then reinvested for the next 7 years at 6% on top of the new investment at 6%.\r
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\n" ); document.write( "\n" ); document.write( "this is what i found.\r
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\n" ); document.write( "\n" ); document.write( "i used the following online calculator to come up with the answer i think you are looking for.\r
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\n" ); document.write( "\n" ); document.write( "https://arachnoid.com/finance/\r
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\n" ); document.write( "\n" ); document.write( "https://arachnoid.com/finance/\r
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\n" ); document.write( "\n" ); document.write( "here's my input for the first loan.\r
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\n" ); document.write( "\n" ); document.write( "here's the output for the first loan.\r
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\n" ); document.write( "\n" ); document.write( "here's my input for the second loan.\r
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\n" ); document.write( "\n" ); document.write( "here's my output for the second loan.\r
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\n" ); document.write( "\n" ); document.write( "now i have the future value of both loans.\r
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\n" ); document.write( "\n" ); document.write( "the first loan, however, needs to be brought forward another 7 years at 6% a year compounded monthly in order to have the total value at the end of 14 years.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "here's my input for the investment of the future value of the first loan for another 7 years at 6% per year compounded monthly.\r
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\n" ); document.write( "\n" ); document.write( "\"$$$\"\r
\n" ); document.write( "\n" ); document.write( "here's my output for the investment of the future value of the first loan for another 7 years at 6% per year compounded monthly.\r
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\n" ); document.write( "\n" ); document.write( "the first loan gave me the future value of the payments of 369 at the end of each month for 84 months at 4% per year compounded monthly.\r
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\n" ); document.write( "\n" ); document.write( "that future value was 35,702.28.\r
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\n" ); document.write( "\n" ); document.write( "the second loan gave me the future value of the payments of 603 at the end of each month for 84 months at 6% per year compounded monthly.\r
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\n" ); document.write( "\n" ); document.write( "the future value was 62,756.58.\r
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\n" ); document.write( "\n" ); document.write( "the 35702.28 future value of the first loan was then invested for another 7 years at 6% compounded monthly.\r
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\n" ); document.write( "\n" ); document.write( "the future value of that investment ws 54,280.66.\r
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\n" ); document.write( "\n" ); document.write( "the total value at the end of 14 years was the sum of 54,280.66 + 62,756.58 = 117,037.24.\r
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\n" ); document.write( "\n" ); document.write( "i also did the problem in excel and this is what i found.\r
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\n" ); document.write( "\n" ); document.write( "the excel month by month calculations agree with the solution provided by the calculator.
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