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Finding the Fourth Proportional to 73,151.55, 109,736.13 and 25,756.80

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Solution

The fourth proportional to 73,151.55, 109,736.13 and 25,756.80 is: 38,638.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,151.55 : 109,736.13 = 25,756.80 : x
  2. Step 2: Convert to fraction form
    73,151.55/109,736.13 = 25,756.80/x
  3. Step 3: Cross multiply
    73,151.55x = 109,736.13 × 25,756.80
  4. Step 4: Simplify right side
    73,151.55x = 2,826,451,553.18
  5. Step 5: Solve for x
    x = 2,826,451,553.18/73,151.55
  6. Step 6: Final answer
    x = 38,638.30

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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.