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Finding the Fourth Proportional to 125,161.38, 187,685.88 and 74,584.26

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Solution

The fourth proportional to 125,161.38, 187,685.88 and 74,584.26 is: 111,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,161.38 : 187,685.88 = 74,584.26 : x
  2. Step 2: Convert to fraction form
    125,161.38/187,685.88 = 74,584.26/x
  3. Step 3: Cross multiply
    125,161.38x = 187,685.88 × 74,584.26
  4. Step 4: Simplify right side
    125,161.38x = 13,998,412,472.25
  5. Step 5: Solve for x
    x = 13,998,412,472.25/125,161.38
  6. Step 6: Final answer
    x = 111,842.91

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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.