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Finding the Fourth Proportional to 79,591.03, 109,834.45 and 43,778.90

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Solution

The fourth proportional to 79,591.03, 109,834.45 and 43,778.90 is: 60,414.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,591.03 : 109,834.45 = 43,778.90 : x
  2. Step 2: Convert to fraction form
    79,591.03/109,834.45 = 43,778.90/x
  3. Step 3: Cross multiply
    79,591.03x = 109,834.45 × 43,778.90
  4. Step 4: Simplify right side
    79,591.03x = 4,808,431,568.24
  5. Step 5: Solve for x
    x = 4,808,431,568.24/79,591.03
  6. Step 6: Final answer
    x = 60,414.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.