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Finding the Fourth Proportional to 66,087.44, 98,980.67 and 51,766.51

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Solution

The fourth proportional to 66,087.44, 98,980.67 and 51,766.51 is: 77,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,087.44 : 98,980.67 = 51,766.51 : x
  2. Step 2: Convert to fraction form
    66,087.44/98,980.67 = 51,766.51/x
  3. Step 3: Cross multiply
    66,087.44x = 98,980.67 × 51,766.51
  4. Step 4: Simplify right side
    66,087.44x = 5,123,883,348.46
  5. Step 5: Solve for x
    x = 5,123,883,348.46/66,087.44
  6. Step 6: Final answer
    x = 77,531.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.