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Finding the Fourth Proportional to 591,991.20, 888,937.20 and 548,330.40

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Solution

The fourth proportional to 591,991.20, 888,937.20 and 548,330.40 is: 823,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,991.20 : 888,937.20 = 548,330.40 : x
  2. Step 2: Convert to fraction form
    591,991.20/888,937.20 = 548,330.40/x
  3. Step 3: Cross multiply
    591,991.20x = 888,937.20 × 548,330.40
  4. Step 4: Simplify right side
    591,991.20x = 487,431,290,450.88
  5. Step 5: Solve for x
    x = 487,431,290,450.88/591,991.20
  6. Step 6: Final answer
    x = 823,375.91

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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.