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Finding the Fourth Proportional to 111,187.82, 166,789.17 and 39,132.17

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Solution

The fourth proportional to 111,187.82, 166,789.17 and 39,132.17 is: 58,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,187.82 : 166,789.17 = 39,132.17 : x
  2. Step 2: Convert to fraction form
    111,187.82/166,789.17 = 39,132.17/x
  3. Step 3: Cross multiply
    111,187.82x = 166,789.17 × 39,132.17
  4. Step 4: Simplify right side
    111,187.82x = 6,526,822,154.60
  5. Step 5: Solve for x
    x = 6,526,822,154.60/111,187.82
  6. Step 6: Final answer
    x = 58,700.87

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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.