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Finding the Fourth Proportional to 54,520.70, 81,781.05 and 41,398.70

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Solution

The fourth proportional to 54,520.70, 81,781.05 and 41,398.70 is: 62,098.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,520.70 : 81,781.05 = 41,398.70 : x
  2. Step 2: Convert to fraction form
    54,520.70/81,781.05 = 41,398.70/x
  3. Step 3: Cross multiply
    54,520.70x = 81,781.05 × 41,398.70
  4. Step 4: Simplify right side
    54,520.70x = 3,385,629,154.64
  5. Step 5: Solve for x
    x = 3,385,629,154.64/54,520.70
  6. Step 6: Final answer
    x = 62,098.05

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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.