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Finding the Fourth Proportional to 71,831.88, 99,121.62 and 41,607.54

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Solution

The fourth proportional to 71,831.88, 99,121.62 and 41,607.54 is: 57,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,831.88 : 99,121.62 = 41,607.54 : x
  2. Step 2: Convert to fraction form
    71,831.88/99,121.62 = 41,607.54/x
  3. Step 3: Cross multiply
    71,831.88x = 99,121.62 × 41,607.54
  4. Step 4: Simplify right side
    71,831.88x = 4,124,206,769.01
  5. Step 5: Solve for x
    x = 4,124,206,769.01/71,831.88
  6. Step 6: Final answer
    x = 57,414.71

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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.