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Finding the Fourth Proportional to 72,712.96, 109,066.27 and 22,791.92

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Solution

The fourth proportional to 72,712.96, 109,066.27 and 22,791.92 is: 34,186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.96 : 109,066.27 = 22,791.92 : x
  2. Step 2: Convert to fraction form
    72,712.96/109,066.27 = 22,791.92/x
  3. Step 3: Cross multiply
    72,712.96x = 109,066.27 × 22,791.92
  4. Step 4: Simplify right side
    72,712.96x = 2,485,829,586.58
  5. Step 5: Solve for x
    x = 2,485,829,586.58/72,712.96
  6. Step 6: Final answer
    x = 34,186.88

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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.