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Finding the Fourth Proportional to 108,521.98, 162,749.49 and 38,385.16

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Solution

The fourth proportional to 108,521.98, 162,749.49 and 38,385.16 is: 57,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.98 : 162,749.49 = 38,385.16 : x
  2. Step 2: Convert to fraction form
    108,521.98/162,749.49 = 38,385.16/x
  3. Step 3: Cross multiply
    108,521.98x = 162,749.49 × 38,385.16
  4. Step 4: Simplify right side
    108,521.98x = 6,247,165,213.57
  5. Step 5: Solve for x
    x = 6,247,165,213.57/108,521.98
  6. Step 6: Final answer
    x = 57,565.90

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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.