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Finding the Fourth Proportional to 891,791.80, 1,231,694.88 and 587,229.64

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Solution

The fourth proportional to 891,791.80, 1,231,694.88 and 587,229.64 is: 811,050.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,791.80 : 1,231,694.88 = 587,229.64 : x
  2. Step 2: Convert to fraction form
    891,791.80/1,231,694.88 = 587,229.64/x
  3. Step 3: Cross multiply
    891,791.80x = 1,231,694.88 × 587,229.64
  4. Step 4: Simplify right side
    891,791.80x = 723,287,740,972.24
  5. Step 5: Solve for x
    x = 723,287,740,972.24/891,791.80
  6. Step 6: Final answer
    x = 811,050.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.