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Finding the Fourth Proportional to 664,330.80, 996,496.20 and 627,589.20

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Solution

The fourth proportional to 664,330.80, 996,496.20 and 627,589.20 is: 941,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,330.80 : 996,496.20 = 627,589.20 : x
  2. Step 2: Convert to fraction form
    664,330.80/996,496.20 = 627,589.20/x
  3. Step 3: Cross multiply
    664,330.80x = 996,496.20 × 627,589.20
  4. Step 4: Simplify right side
    664,330.80x = 625,390,252,961.04
  5. Step 5: Solve for x
    x = 625,390,252,961.04/664,330.80
  6. Step 6: Final answer
    x = 941,383.80

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Half scale
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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.