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Find the mean proportional between 7 and 343.

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Find the mean proportional between 7 and 343.
1. 7
2. 39
3. 19
4. 49
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Correct Answer - Option 4 : 49

Given:

Two numbers are 7 and 343 

Formula:

Mean proportion of x and y = √xy

Calculation:

7 ∶ x ∷ x ∶ 343

x = √(7 × 343)

⇒ x = 49

∴ The mean proportional is 49.

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