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# Find The Fourth Proportional to 2xy, X2 And Y2. - Mathematics

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#### Question

Find the fourth proportional to 2xy, x2 and y2.

#### Solution

Let the fourth proportional to 2xy, x^2 and y^2 be n

=> 2xy : x^2 = y^2 : n

=> 2xy x n = x^2 xx y^2

=> n = (x^2y^2)/(2xy) = (xy)/2

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