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Finding the Fourth Proportional to 172,672.20, 259,022.96 and 48,013.20

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Solution

The fourth proportional to 172,672.20, 259,022.96 and 48,013.20 is: 72,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,672.20 : 259,022.96 = 48,013.20 : x
  2. Step 2: Convert to fraction form
    172,672.20/259,022.96 = 48,013.20/x
  3. Step 3: Cross multiply
    172,672.20x = 259,022.96 × 48,013.20
  4. Step 4: Simplify right side
    172,672.20x = 12,436,521,183.07
  5. Step 5: Solve for x
    x = 12,436,521,183.07/172,672.20
  6. Step 6: Final answer
    x = 72,023.88

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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.