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Finding the Fourth Proportional to 543,387.44, 815,124.84 and 206,589.20

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Solution

The fourth proportional to 543,387.44, 815,124.84 and 206,589.20 is: 309,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,387.44 : 815,124.84 = 206,589.20 : x
  2. Step 2: Convert to fraction form
    543,387.44/815,124.84 = 206,589.20/x
  3. Step 3: Cross multiply
    543,387.44x = 815,124.84 × 206,589.20
  4. Step 4: Simplify right side
    543,387.44x = 168,395,988,595.73
  5. Step 5: Solve for x
    x = 168,395,988,595.73/543,387.44
  6. Step 6: Final answer
    x = 309,900.41

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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.