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Finding the Fourth Proportional to 172,363.44, 258,391.62 and 67,158.48

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Solution

The fourth proportional to 172,363.44, 258,391.62 and 67,158.48 is: 100,677.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,363.44 : 258,391.62 = 67,158.48 : x
  2. Step 2: Convert to fraction form
    172,363.44/258,391.62 = 67,158.48/x
  3. Step 3: Cross multiply
    172,363.44x = 258,391.62 × 67,158.48
  4. Step 4: Simplify right side
    172,363.44x = 17,353,188,443.94
  5. Step 5: Solve for x
    x = 17,353,188,443.94/172,363.44
  6. Step 6: Final answer
    x = 100,677.90

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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.