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Finding the Fourth Proportional to 408,093.20, 611,542.20 and 365,973.20

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Solution

The fourth proportional to 408,093.20, 611,542.20 and 365,973.20 is: 548,423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,093.20 : 611,542.20 = 365,973.20 : x
  2. Step 2: Convert to fraction form
    408,093.20/611,542.20 = 365,973.20/x
  3. Step 3: Cross multiply
    408,093.20x = 611,542.20 × 365,973.20
  4. Step 4: Simplify right side
    408,093.20x = 223,808,055,869.04
  5. Step 5: Solve for x
    x = 223,808,055,869.04/408,093.20
  6. Step 6: Final answer
    x = 548,423.88

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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.