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Finding the Fourth Proportional to 372,786.80, 514,442.24 and 203,023.76

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Solution

The fourth proportional to 372,786.80, 514,442.24 and 203,023.76 is: 280,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,786.80 : 514,442.24 = 203,023.76 : x
  2. Step 2: Convert to fraction form
    372,786.80/514,442.24 = 203,023.76/x
  3. Step 3: Cross multiply
    372,786.80x = 514,442.24 × 203,023.76
  4. Step 4: Simplify right side
    372,786.80x = 104,443,997,867.62
  5. Step 5: Solve for x
    x = 104,443,997,867.62/372,786.80
  6. Step 6: Final answer
    x = 280,170.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.