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Finding the Fourth Proportional to 321,867.20, 482,800.80 and 204,060.80

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Solution

The fourth proportional to 321,867.20, 482,800.80 and 204,060.80 is: 306,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,867.20 : 482,800.80 = 204,060.80 : x
  2. Step 2: Convert to fraction form
    321,867.20/482,800.80 = 204,060.80/x
  3. Step 3: Cross multiply
    321,867.20x = 482,800.80 × 204,060.80
  4. Step 4: Simplify right side
    321,867.20x = 98,520,717,488.64
  5. Step 5: Solve for x
    x = 98,520,717,488.64/321,867.20
  6. Step 6: Final answer
    x = 306,091.20

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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.