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Finding the Fourth Proportional to 627,712.80, 941,569.20 and 581,632.80

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Solution

The fourth proportional to 627,712.80, 941,569.20 and 581,632.80 is: 872,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,712.80 : 941,569.20 = 581,632.80 : x
  2. Step 2: Convert to fraction form
    627,712.80/941,569.20 = 581,632.80/x
  3. Step 3: Cross multiply
    627,712.80x = 941,569.20 × 581,632.80
  4. Step 4: Simplify right side
    627,712.80x = 547,647,530,189.76
  5. Step 5: Solve for x
    x = 547,647,530,189.76/627,712.80
  6. Step 6: Final answer
    x = 872,449.20

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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.