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Finding the Fourth Proportional to 403,200.62, 605,174.52 and 203,660.85

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Solution

The fourth proportional to 403,200.62, 605,174.52 and 203,660.85 is: 305,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,200.62 : 605,174.52 = 203,660.85 : x
  2. Step 2: Convert to fraction form
    403,200.62/605,174.52 = 203,660.85/x
  3. Step 3: Cross multiply
    403,200.62x = 605,174.52 × 203,660.85
  4. Step 4: Simplify right side
    403,200.62x = 123,250,357,141.54
  5. Step 5: Solve for x
    x = 123,250,357,141.54/403,200.62
  6. Step 6: Final answer
    x = 305,679.98

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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.