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Finding the Fourth Proportional to 361,690.92, 542,540.43 and 172,168.74

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Solution

The fourth proportional to 361,690.92, 542,540.43 and 172,168.74 is: 258,255.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,690.92 : 542,540.43 = 172,168.74 : x
  2. Step 2: Convert to fraction form
    361,690.92/542,540.43 = 172,168.74/x
  3. Step 3: Cross multiply
    361,690.92x = 542,540.43 × 172,168.74
  4. Step 4: Simplify right side
    361,690.92x = 93,408,502,232.16
  5. Step 5: Solve for x
    x = 93,408,502,232.16/361,690.92
  6. Step 6: Final answer
    x = 258,255.04

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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.