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Finding the Fourth Proportional to 125,257.92, 187,769.28 and 42,093.76

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Solution

The fourth proportional to 125,257.92, 187,769.28 and 42,093.76 is: 63,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,257.92 : 187,769.28 = 42,093.76 : x
  2. Step 2: Convert to fraction form
    125,257.92/187,769.28 = 42,093.76/x
  3. Step 3: Cross multiply
    125,257.92x = 187,769.28 × 42,093.76
  4. Step 4: Simplify right side
    125,257.92x = 7,903,915,007.69
  5. Step 5: Solve for x
    x = 7,903,915,007.69/125,257.92
  6. Step 6: Final answer
    x = 63,101.12

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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.