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[Post New]30 Jun 2007 18:58:22 IST
    Subject: geometrical progression
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neeraj_agarwal_1990 (887)

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Olaaa!! Perrrfect answer. 135  [241 rates]
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take a^1/x=b^1/y=c^1/z = K.

now find the values of a,b,c in form of k and apply c^2=ab...
comparing both sides...
2y=x+z
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