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Finding the Fourth Proportional to 173,442.30, 260,163.45 and 131,451.90

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Solution

The fourth proportional to 173,442.30, 260,163.45 and 131,451.90 is: 197,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,442.30 : 260,163.45 = 131,451.90 : x
  2. Step 2: Convert to fraction form
    173,442.30/260,163.45 = 131,451.90/x
  3. Step 3: Cross multiply
    173,442.30x = 260,163.45 × 131,451.90
  4. Step 4: Simplify right side
    173,442.30x = 34,198,979,813.06
  5. Step 5: Solve for x
    x = 34,198,979,813.06/173,442.30
  6. Step 6: Final answer
    x = 197,177.85

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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.