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Finding the Fourth Proportional to 125,641.85, 188,490.56 and 41,398.61

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Solution

The fourth proportional to 125,641.85, 188,490.56 and 41,398.61 is: 62,107.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,641.85 : 188,490.56 = 41,398.61 : x
  2. Step 2: Convert to fraction form
    125,641.85/188,490.56 = 41,398.61/x
  3. Step 3: Cross multiply
    125,641.85x = 188,490.56 × 41,398.61
  4. Step 4: Simplify right side
    125,641.85x = 7,803,247,182.12
  5. Step 5: Solve for x
    x = 7,803,247,182.12/125,641.85
  6. Step 6: Final answer
    x = 62,107.07

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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.