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Finding the Fourth Proportional to 664,293.60, 996,440.40 and 451,717.20

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Solution

The fourth proportional to 664,293.60, 996,440.40 and 451,717.20 is: 677,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,293.60 : 996,440.40 = 451,717.20 : x
  2. Step 2: Convert to fraction form
    664,293.60/996,440.40 = 451,717.20/x
  3. Step 3: Cross multiply
    664,293.60x = 996,440.40 × 451,717.20
  4. Step 4: Simplify right side
    664,293.60x = 450,109,267,454.88
  5. Step 5: Solve for x
    x = 450,109,267,454.88/664,293.60
  6. Step 6: Final answer
    x = 677,575.80

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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.