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Finding the Fourth Proportional to 73,221.57, 109,845.32 and 27,628.29

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Solution

The fourth proportional to 73,221.57, 109,845.32 and 27,628.29 is: 41,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.57 : 109,845.32 = 27,628.29 : x
  2. Step 2: Convert to fraction form
    73,221.57/109,845.32 = 27,628.29/x
  3. Step 3: Cross multiply
    73,221.57x = 109,845.32 × 27,628.29
  4. Step 4: Simplify right side
    73,221.57x = 3,034,838,217.96
  5. Step 5: Solve for x
    x = 3,034,838,217.96/73,221.57
  6. Step 6: Final answer
    x = 41,447.33

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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.