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Finding the Fourth Proportional to 481,267.20, 721,900.80 and 148,843.20

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Solution

The fourth proportional to 481,267.20, 721,900.80 and 148,843.20 is: 223,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,267.20 : 721,900.80 = 148,843.20 : x
  2. Step 2: Convert to fraction form
    481,267.20/721,900.80 = 148,843.20/x
  3. Step 3: Cross multiply
    481,267.20x = 721,900.80 × 148,843.20
  4. Step 4: Simplify right side
    481,267.20x = 107,450,025,154.56
  5. Step 5: Solve for x
    x = 107,450,025,154.56/481,267.20
  6. Step 6: Final answer
    x = 223,264.80

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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.