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Finding the Fourth Proportional to 463,568.80, 694,546.80 and 213,738.40

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Solution

The fourth proportional to 463,568.80, 694,546.80 and 213,738.40 is: 320,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,568.80 : 694,546.80 = 213,738.40 : x
  2. Step 2: Convert to fraction form
    463,568.80/694,546.80 = 213,738.40/x
  3. Step 3: Cross multiply
    463,568.80x = 694,546.80 × 213,738.40
  4. Step 4: Simplify right side
    463,568.80x = 148,451,321,757.12
  5. Step 5: Solve for x
    x = 148,451,321,757.12/463,568.80
  6. Step 6: Final answer
    x = 320,235.79

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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.