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Finding the Fourth Proportional to 72,493.20, 108,749.92 and 22,576.88

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Solution

The fourth proportional to 72,493.20, 108,749.92 and 22,576.88 is: 33,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.20 : 108,749.92 = 22,576.88 : x
  2. Step 2: Convert to fraction form
    72,493.20/108,749.92 = 22,576.88/x
  3. Step 3: Cross multiply
    72,493.20x = 108,749.92 × 22,576.88
  4. Step 4: Simplify right side
    72,493.20x = 2,455,233,893.85
  5. Step 5: Solve for x
    x = 2,455,233,893.85/72,493.20
  6. Step 6: Final answer
    x = 33,868.47

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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.