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Finding the Fourth Proportional to 73,791.20, 110,665.20 and 26,400.80

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Solution

The fourth proportional to 73,791.20, 110,665.20 and 26,400.80 is: 39,593.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,791.20 : 110,665.20 = 26,400.80 : x
  2. Step 2: Convert to fraction form
    73,791.20/110,665.20 = 26,400.80/x
  3. Step 3: Cross multiply
    73,791.20x = 110,665.20 × 26,400.80
  4. Step 4: Simplify right side
    73,791.20x = 2,921,649,812.16
  5. Step 5: Solve for x
    x = 2,921,649,812.16/73,791.20
  6. Step 6: Final answer
    x = 39,593.47

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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.