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Finding the Fourth Proportional to 551,148.80, 826,723.20 and 481,164.80

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Solution

The fourth proportional to 551,148.80, 826,723.20 and 481,164.80 is: 721,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,148.80 : 826,723.20 = 481,164.80 : x
  2. Step 2: Convert to fraction form
    551,148.80/826,723.20 = 481,164.80/x
  3. Step 3: Cross multiply
    551,148.80x = 826,723.20 × 481,164.80
  4. Step 4: Simplify right side
    551,148.80x = 397,790,103,183.36
  5. Step 5: Solve for x
    x = 397,790,103,183.36/551,148.80
  6. Step 6: Final answer
    x = 721,747.20

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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.