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Finding the Fourth Proportional to 408,136.20, 611,606.70 and 366,016.20

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Solution

The fourth proportional to 408,136.20, 611,606.70 and 366,016.20 is: 548,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,136.20 : 611,606.70 = 366,016.20 : x
  2. Step 2: Convert to fraction form
    408,136.20/611,606.70 = 366,016.20/x
  3. Step 3: Cross multiply
    408,136.20x = 611,606.70 × 366,016.20
  4. Step 4: Simplify right side
    408,136.20x = 223,857,960,228.54
  5. Step 5: Solve for x
    x = 223,857,960,228.54/408,136.20
  6. Step 6: Final answer
    x = 548,488.37

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1.5x scale

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.