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Finding the Fourth Proportional to 172,349.68, 258,522.56 and 67,242.46

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Solution

The fourth proportional to 172,349.68, 258,522.56 and 67,242.46 is: 100,862.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,349.68 : 258,522.56 = 67,242.46 : x
  2. Step 2: Convert to fraction form
    172,349.68/258,522.56 = 67,242.46/x
  3. Step 3: Cross multiply
    172,349.68x = 258,522.56 × 67,242.46
  4. Step 4: Simplify right side
    172,349.68x = 17,383,692,899.90
  5. Step 5: Solve for x
    x = 17,383,692,899.90/172,349.68
  6. Step 6: Final answer
    x = 100,862.93

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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.