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Finding the Fourth Proportional to 72,221.46, 108,369.97 and 29,558.56

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Solution

The fourth proportional to 72,221.46, 108,369.97 and 29,558.56 is: 44,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,221.46 : 108,369.97 = 29,558.56 : x
  2. Step 2: Convert to fraction form
    72,221.46/108,369.97 = 29,558.56/x
  3. Step 3: Cross multiply
    72,221.46x = 108,369.97 × 29,558.56
  4. Step 4: Simplify right side
    72,221.46x = 3,203,259,915.62
  5. Step 5: Solve for x
    x = 3,203,259,915.62/72,221.46
  6. Step 6: Final answer
    x = 44,353.30

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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.