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Finding the Fourth Proportional to 173,378.43, 260,142.77 and 61,138.85

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Solution

The fourth proportional to 173,378.43, 260,142.77 and 61,138.85 is: 91,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,378.43 : 260,142.77 = 61,138.85 : x
  2. Step 2: Convert to fraction form
    173,378.43/260,142.77 = 61,138.85/x
  3. Step 3: Cross multiply
    173,378.43x = 260,142.77 × 61,138.85
  4. Step 4: Simplify right side
    173,378.43x = 15,904,828,645.75
  5. Step 5: Solve for x
    x = 15,904,828,645.75/173,378.43
  6. Step 6: Final answer
    x = 91,734.76

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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.