SOLUTION: if {{{a/b=b/c=c/d}}}, then prove that {{{(a^3+b^3+c^3)/(b^3+c^3+d^3)}}}{{{""=""}}}{{{a/d}}}

SOLUTION: if {{{a/b=b/c=c/d}}}, then prove that {{{(a^3+b^3+c^3)/(b^3+c^3+d^3)}}}{{{""=""}}}{{{a/d}}}

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Question 1188899: if , then prove that
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!
if , then prove that

Let , then







So, since , , and ,






Since , , so



Edwin

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