Determine if the ratios are in proportion
$1150 m l : 250 m l : : 3150 m l : 300 m l$

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Solution

Step-1: write $a, b, c a n d d$ from $1150 m l : 250 m l : : 3150 m l : 300 m l$ as it is written $a : b : : c : d$
Here, $a = 1150 m l$ $b = 250 m l$ $c = 3150 m l$ $d = 300 m l$
Step-2: check whether $a \times d = c \times b$ or $n o t$
$a \times d = 1150 \times 300 = 3, 45, 000$
$c \times b = 3150 \times 250 = 7, 87, 500$
Here, $3, 45, 000 \neq 7, 87, 500$
$a \times d \neq c \times b$
Hence, $1150 m l : 250 m l : : 3150 m l : 300 m l$ are not in proportion

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