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Finding the Fourth Proportional to 73,129.40, 109,694.10 and 41,967.80

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Solution

The fourth proportional to 73,129.40, 109,694.10 and 41,967.80 is: 62,951.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,129.40 : 109,694.10 = 41,967.80 : x
  2. Step 2: Convert to fraction form
    73,129.40/109,694.10 = 41,967.80/x
  3. Step 3: Cross multiply
    73,129.40x = 109,694.10 × 41,967.80
  4. Step 4: Simplify right side
    73,129.40x = 4,603,620,049.98
  5. Step 5: Solve for x
    x = 4,603,620,049.98/73,129.40
  6. Step 6: Final answer
    x = 62,951.70

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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.