7
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1/4 * 28 = 7
1
2/7 + 1/4 (2*4)/(7*4) + 7/(4*7) 8/28 + 7/28 (8 + 7)/28 15/28
28 is the LCD
To find a ratio equivalent to 4 over 28, we need to simplify the fraction by finding the greatest common factor (GCF) of 4 and 28, which is 4. Dividing both the numerator and denominator by 4 gives us 1 over 7. Therefore, the ratio equivalent to 4 over 28 is 1:7.