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Finding the Fourth Proportional to 664,385.80, 996,578.70 and 461,432.20

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Solution

The fourth proportional to 664,385.80, 996,578.70 and 461,432.20 is: 692,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,385.80 : 996,578.70 = 461,432.20 : x
  2. Step 2: Convert to fraction form
    664,385.80/996,578.70 = 461,432.20/x
  3. Step 3: Cross multiply
    664,385.80x = 996,578.70 × 461,432.20
  4. Step 4: Simplify right side
    664,385.80x = 459,853,502,014.14
  5. Step 5: Solve for x
    x = 459,853,502,014.14/664,385.80
  6. Step 6: Final answer
    x = 692,148.30

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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.