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Finding the Fourth Proportional to 72,874.96, 109,065.54 and 44,812.79

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Solution

The fourth proportional to 72,874.96, 109,065.54 and 44,812.79 is: 67,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,874.96 : 109,065.54 = 44,812.79 : x
  2. Step 2: Convert to fraction form
    72,874.96/109,065.54 = 44,812.79/x
  3. Step 3: Cross multiply
    72,874.96x = 109,065.54 × 44,812.79
  4. Step 4: Simplify right side
    72,874.96x = 4,887,530,370.86
  5. Step 5: Solve for x
    x = 4,887,530,370.86/72,874.96
  6. Step 6: Final answer
    x = 67,067.35

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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.