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Simple Tricks to solve Ratio and Proportion

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How to convert a:b and b:c  into a:b:c ??

Multiply a and b vertically to get the value of 'a' 
Multiply b and b crossly to get the value of 'b'
Multiply 'b' and 'c' vertically to get the value of 'c'

























How to convert a:b and b:c and c:d into a:b:c:d ??

Multiply a , b and c  vertically to get the value of 'a' 
Multiply b , c and a vertically  to get the value of 'd'
Multiply b , b and c crossly to get the value of 'b'
Multiply b , c and c crossly to get the value of 'c'



Hence, the conversion can be made easily with these tricks.
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