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Finding the Fourth Proportional to 60,641.10, 90,864.45 and 38,414.70

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Solution

The fourth proportional to 60,641.10, 90,864.45 and 38,414.70 is: 57,560.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,641.10 : 90,864.45 = 38,414.70 : x
  2. Step 2: Convert to fraction form
    60,641.10/90,864.45 = 38,414.70/x
  3. Step 3: Cross multiply
    60,641.10x = 90,864.45 × 38,414.70
  4. Step 4: Simplify right side
    60,641.10x = 3,490,530,587.42
  5. Step 5: Solve for x
    x = 3,490,530,587.42/60,641.10
  6. Step 6: Final answer
    x = 57,560.48

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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.