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Finding the Fourth Proportional to 54,702, 75,488.79 and 29,551.50

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Solution

The fourth proportional to 54,702, 75,488.79 and 29,551.50 is: 40,781.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,702 : 75,488.79 = 29,551.50 : x
  2. Step 2: Convert to fraction form
    54,702/75,488.79 = 29,551.50/x
  3. Step 3: Cross multiply
    54,702x = 75,488.79 × 29,551.50
  4. Step 4: Simplify right side
    54,702x = 2,230,806,977.69
  5. Step 5: Solve for x
    x = 2,230,806,977.69/54,702
  6. Step 6: Final answer
    x = 40,781.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.