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Finding the Fourth Proportional to 72,463.52, 108,519.72 and 36,831.12

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Solution

The fourth proportional to 72,463.52, 108,519.72 and 36,831.12 is: 55,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.52 : 108,519.72 = 36,831.12 : x
  2. Step 2: Convert to fraction form
    72,463.52/108,519.72 = 36,831.12/x
  3. Step 3: Cross multiply
    72,463.52x = 108,519.72 × 36,831.12
  4. Step 4: Simplify right side
    72,463.52x = 3,996,902,829.69
  5. Step 5: Solve for x
    x = 3,996,902,829.69/72,463.52
  6. Step 6: Final answer
    x = 55,157.45

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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.