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Finding the Fourth Proportional to 485,193.20, 726,040.20 and 327,729.20

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Solution

The fourth proportional to 485,193.20, 726,040.20 and 327,729.20 is: 490,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,193.20 : 726,040.20 = 327,729.20 : x
  2. Step 2: Convert to fraction form
    485,193.20/726,040.20 = 327,729.20/x
  3. Step 3: Cross multiply
    485,193.20x = 726,040.20 × 327,729.20
  4. Step 4: Simplify right side
    485,193.20x = 237,944,573,913.84
  5. Step 5: Solve for x
    x = 237,944,573,913.84/485,193.20
  6. Step 6: Final answer
    x = 490,412.01

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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.