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Finding the Fourth Proportional to 181,213.42, 271,712.46 and 68,901.85

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Solution

The fourth proportional to 181,213.42, 271,712.46 and 68,901.85 is: 103,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,213.42 : 271,712.46 = 68,901.85 : x
  2. Step 2: Convert to fraction form
    181,213.42/271,712.46 = 68,901.85/x
  3. Step 3: Cross multiply
    181,213.42x = 271,712.46 × 68,901.85
  4. Step 4: Simplify right side
    181,213.42x = 18,721,491,162.05
  5. Step 5: Solve for x
    x = 18,721,491,162.05/181,213.42
  6. Step 6: Final answer
    x = 103,311.84

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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.