Question 68

If 8 : x :: x : 32, find the positive value of x.

Solution

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If 8 : x :: x : 32.

$$\frac{8}{x}\ =\ \frac{x}{32}$$

$$x^2\ =\ 8\times\ 32$$

$$x^2\ =\ 256$$

x = 16, -16

positive value of x = 16

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