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Finding the Fourth Proportional to 664,398.80, 996,598.20 and 627,657.20

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Solution

The fourth proportional to 664,398.80, 996,598.20 and 627,657.20 is: 941,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,398.80 : 996,598.20 = 627,657.20 : x
  2. Step 2: Convert to fraction form
    664,398.80/996,598.20 = 627,657.20/x
  3. Step 3: Cross multiply
    664,398.80x = 996,598.20 × 627,657.20
  4. Step 4: Simplify right side
    664,398.80x = 625,522,035,737.04
  5. Step 5: Solve for x
    x = 625,522,035,737.04/664,398.80
  6. Step 6: Final answer
    x = 941,485.80

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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.