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Finding the Fourth Proportional to 866,832.20, 1,297,713.90 and 618,000.20

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Solution

The fourth proportional to 866,832.20, 1,297,713.90 and 618,000.20 is: 925,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,832.20 : 1,297,713.90 = 618,000.20 : x
  2. Step 2: Convert to fraction form
    866,832.20/1,297,713.90 = 618,000.20/x
  3. Step 3: Cross multiply
    866,832.20x = 1,297,713.90 × 618,000.20
  4. Step 4: Simplify right side
    866,832.20x = 801,987,449,742.78
  5. Step 5: Solve for x
    x = 801,987,449,742.78/866,832.20
  6. Step 6: Final answer
    x = 925,193.42

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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.