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Finding the Fourth Proportional to 74,936.40, 112,404.60 and 58,205.85

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Solution

The fourth proportional to 74,936.40, 112,404.60 and 58,205.85 is: 87,308.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,936.40 : 112,404.60 = 58,205.85 : x
  2. Step 2: Convert to fraction form
    74,936.40/112,404.60 = 58,205.85/x
  3. Step 3: Cross multiply
    74,936.40x = 112,404.60 × 58,205.85
  4. Step 4: Simplify right side
    74,936.40x = 6,542,605,286.91
  5. Step 5: Solve for x
    x = 6,542,605,286.91/74,936.40
  6. Step 6: Final answer
    x = 87,308.78

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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.