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Finding the Fourth Proportional to 43,386.60, 65,079.90 and 38,793.90

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Solution

The fourth proportional to 43,386.60, 65,079.90 and 38,793.90 is: 58,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,386.60 : 65,079.90 = 38,793.90 : x
  2. Step 2: Convert to fraction form
    43,386.60/65,079.90 = 38,793.90/x
  3. Step 3: Cross multiply
    43,386.60x = 65,079.90 × 38,793.90
  4. Step 4: Simplify right side
    43,386.60x = 2,524,703,132.61
  5. Step 5: Solve for x
    x = 2,524,703,132.61/43,386.60
  6. Step 6: Final answer
    x = 58,190.85

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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.