document.write( "Question 1117074: Seventy two grams of fertilizer is given to a dogwood tree the first year, 60 grams the second year, 50 grams the third year, and so on. Find the total amount of fertilizer received by the dogwood tree.\r
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Algebra.Com's Answer #732036 by ikleyn(52788)\"\" \"About 
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document.write( "The sum of the infinite geometric progression with the first term a = 72 and the common ratio r = \"60%2F72\" = \"5%2F6\"\r\n" );
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document.write( "S = \"a%2F%281-r%29\" = \"72%2F%281-5%2F6%29\" = \"72%2F%28%281%2F6%29%29\" = 72*6 = 432.\r\n" );
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