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Finding the Fourth Proportional to 67,908.60, 101,893.68 and 28,474.56

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Solution

The fourth proportional to 67,908.60, 101,893.68 and 28,474.56 is: 42,724.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,908.60 : 101,893.68 = 28,474.56 : x
  2. Step 2: Convert to fraction form
    67,908.60/101,893.68 = 28,474.56/x
  3. Step 3: Cross multiply
    67,908.60x = 101,893.68 × 28,474.56
  4. Step 4: Simplify right side
    67,908.60x = 2,901,377,704.78
  5. Step 5: Solve for x
    x = 2,901,377,704.78/67,908.60
  6. Step 6: Final answer
    x = 42,724.75

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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.