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Finding the Fourth Proportional to 627,738.80, 941,608.20 and 581,658.80

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Solution

The fourth proportional to 627,738.80, 941,608.20 and 581,658.80 is: 872,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,738.80 : 941,608.20 = 581,658.80 : x
  2. Step 2: Convert to fraction form
    627,738.80/941,608.20 = 581,658.80/x
  3. Step 3: Cross multiply
    627,738.80x = 941,608.20 × 581,658.80
  4. Step 4: Simplify right side
    627,738.80x = 547,694,695,682.16
  5. Step 5: Solve for x
    x = 547,694,695,682.16/627,738.80
  6. Step 6: Final answer
    x = 872,488.20

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Double scale
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Similar ratio
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1.5x scale

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.