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Finding the Fourth Proportional to 67,314.90, 100,939.03 and 39,242.02

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Solution

The fourth proportional to 67,314.90, 100,939.03 and 39,242.02 is: 58,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,314.90 : 100,939.03 = 39,242.02 : x
  2. Step 2: Convert to fraction form
    67,314.90/100,939.03 = 39,242.02/x
  3. Step 3: Cross multiply
    67,314.90x = 100,939.03 × 39,242.02
  4. Step 4: Simplify right side
    67,314.90x = 3,961,051,355.62
  5. Step 5: Solve for x
    x = 3,961,051,355.62/67,314.90
  6. Step 6: Final answer
    x = 58,843.61

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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.