Q. 24.1( 48 Votes )

If (28 - x) is th

Answer :

A number b is said to be mean proportional of two numbers a and c if


b2 = ac.


From the definition of mean proportion, we get:


(28 - x)2 = (23 - x)(19 - x)


784 + x2 – 56x = 437 - 42x + x2


-56x + 42x = 437 – 784


-14x= -347


x = 347/14


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