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Finding the Fourth Proportional to 125,659.68, 188,484.66 and 42,553.68

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Solution

The fourth proportional to 125,659.68, 188,484.66 and 42,553.68 is: 63,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,659.68 : 188,484.66 = 42,553.68 : x
  2. Step 2: Convert to fraction form
    125,659.68/188,484.66 = 42,553.68/x
  3. Step 3: Cross multiply
    125,659.68x = 188,484.66 × 42,553.68
  4. Step 4: Simplify right side
    125,659.68x = 8,020,715,906.55
  5. Step 5: Solve for x
    x = 8,020,715,906.55/125,659.68
  6. Step 6: Final answer
    x = 63,828.87

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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.