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Finding the Fourth Proportional to 125,640.85, 188,489.06 and 41,397.61

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Solution

The fourth proportional to 125,640.85, 188,489.06 and 41,397.61 is: 62,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640.85 : 188,489.06 = 41,397.61 : x
  2. Step 2: Convert to fraction form
    125,640.85/188,489.06 = 41,397.61/x
  3. Step 3: Cross multiply
    125,640.85x = 188,489.06 × 41,397.61
  4. Step 4: Simplify right side
    125,640.85x = 7,802,996,595.15
  5. Step 5: Solve for x
    x = 7,802,996,595.15/125,640.85
  6. Step 6: Final answer
    x = 62,105.57

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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.