document.write( "Question 110626: Solve the proportion.\r
\n" ); document.write( "\n" ); document.write( "k/28=8/63
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Algebra.Com's Answer #80595 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Given the proportion:
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\n" ); document.write( "\"k%2F28=8%2F63\"
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\n" ); document.write( "You can start the solution to proportion problems by using a process called \"cross multiplying.\"
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\n" ); document.write( "In this process you multiply the numerator of one side times the denominator of the other
\n" ); document.write( "side, then write the equal sign, and follow that by multiplying the numerator of the other
\n" ); document.write( "side by the denominator of the first side. A little difficult to describe, but actually
\n" ); document.write( "pretty easy to do once you get the hang of it.
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\n" ); document.write( "In this problem we can begin by multiplying the k (a numerator) times the 63 (the denominator
\n" ); document.write( "from the other side), then write the equal sign, and on the other side of the equal sign
\n" ); document.write( "multiply the 8 (a numerator) times the 28 (denominator from the opposite side).
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\n" ); document.write( "When you do that you have:
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\n" ); document.write( "\"63%2Ak+=+8%2A28\"
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\n" ); document.write( "Now you can solve for k by dividing both sides by 63 (the multiplier of k) to get:
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\n" ); document.write( "\"k+=+%288%2A28%29%2F63\"
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\n" ); document.write( "Notice that 63 factors into 9 times 7. Therefore, you can replace the 63 with 9*7 and the
\n" ); document.write( "problem then becomes:
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\n" ); document.write( "\"k+=+%288%2A28%29%2F%289%2A7%29\"
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\n" ); document.write( "And the 28 in the numerator factors into 7 times 4. So replace the 28 with 7*4 and the
\n" ); document.write( "problem is then:
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\n" ); document.write( "\"k+=+%288%2A7%2A4%29%2F%289%2A7%29\"
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\n" ); document.write( "You can then cancel the 7 in the numerator with the 7 in the denominator and you have:
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\n" ); document.write( "\"k+=+%288%2Across%287%29%2A4%29%2F%289%2Across%287%29%29+=+%288%2A4%29%2F9+\"
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\n" ); document.write( "Nothing else will cancel nicely, so multiply out the numerator and divide that product
\n" ); document.write( "by the denominator to get:
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\n" ); document.write( "\"k+=+%288%2A4%29%2F9+=+32%2F9+=+3.555556\"
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\n" ); document.write( "Hope this helps you. The cross process of cross multiplying is a convenient way to remember
\n" ); document.write( "what to do to convert proportions to an ordinary algebraic equation. You might want to
\n" ); document.write( "remember it.
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