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Finding the Fourth Proportional to 231,687.20, 347,530.80 and 73,927.20

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Solution

The fourth proportional to 231,687.20, 347,530.80 and 73,927.20 is: 110,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,687.20 : 347,530.80 = 73,927.20 : x
  2. Step 2: Convert to fraction form
    231,687.20/347,530.80 = 73,927.20/x
  3. Step 3: Cross multiply
    231,687.20x = 347,530.80 × 73,927.20
  4. Step 4: Simplify right side
    231,687.20x = 25,691,978,957.76
  5. Step 5: Solve for x
    x = 25,691,978,957.76/231,687.20
  6. Step 6: Final answer
    x = 110,890.80

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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.