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Finding the Fourth Proportional to 54,166.70, 81,091.65 and 38,614.70

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Solution

The fourth proportional to 54,166.70, 81,091.65 and 38,614.70 is: 57,809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,166.70 : 81,091.65 = 38,614.70 : x
  2. Step 2: Convert to fraction form
    54,166.70/81,091.65 = 38,614.70/x
  3. Step 3: Cross multiply
    54,166.70x = 81,091.65 × 38,614.70
  4. Step 4: Simplify right side
    54,166.70x = 3,131,329,737.26
  5. Step 5: Solve for x
    x = 3,131,329,737.26/54,166.70
  6. Step 6: Final answer
    x = 57,809.13

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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.