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Finding the Fourth Proportional to 363,143.20, 544,539.84 and 126,480.64

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Solution

The fourth proportional to 363,143.20, 544,539.84 and 126,480.64 is: 189,660.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,143.20 : 544,539.84 = 126,480.64 : x
  2. Step 2: Convert to fraction form
    363,143.20/544,539.84 = 126,480.64/x
  3. Step 3: Cross multiply
    363,143.20x = 544,539.84 × 126,480.64
  4. Step 4: Simplify right side
    363,143.20x = 68,873,747,468.70
  5. Step 5: Solve for x
    x = 68,873,747,468.70/363,143.20
  6. Step 6: Final answer
    x = 189,660.02

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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.