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Finding the Fourth Proportional to 408,053.20, 611,482.20 and 365,933.20

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Solution

The fourth proportional to 408,053.20, 611,482.20 and 365,933.20 is: 548,363.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,053.20 : 611,482.20 = 365,933.20 : x
  2. Step 2: Convert to fraction form
    408,053.20/611,482.20 = 365,933.20/x
  3. Step 3: Cross multiply
    408,053.20x = 611,482.20 × 365,933.20
  4. Step 4: Simplify right side
    408,053.20x = 223,761,638,189.04
  5. Step 5: Solve for x
    x = 223,761,638,189.04/408,053.20
  6. Step 6: Final answer
    x = 548,363.89

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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.