if a,b and c are in proportion. find the value of a if b=15, c=40 step by step please
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If the 3 alphabets a, b, c ar in proportion then =a:b:b:c
=a:15:15:40
a×40=15=15
=40a=225
Therefore a=225÷40
=55.125
=a:15:15:40
a×40=15=15
=40a=225
Therefore a=225÷40
=55.125
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