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Finding the Fourth Proportional to 591,626.18, 816,443.82 and 319,694

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Solution

The fourth proportional to 591,626.18, 816,443.82 and 319,694 is: 441,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,626.18 : 816,443.82 = 319,694 : x
  2. Step 2: Convert to fraction form
    591,626.18/816,443.82 = 319,694/x
  3. Step 3: Cross multiply
    591,626.18x = 816,443.82 × 319,694
  4. Step 4: Simplify right side
    591,626.18x = 261,012,190,591.08
  5. Step 5: Solve for x
    x = 261,012,190,591.08/591,626.18
  6. Step 6: Final answer
    x = 441,177.55

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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.