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Finding the Fourth Proportional to 664,273.80, 996,410.70 and 398,334.60

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Solution

The fourth proportional to 664,273.80, 996,410.70 and 398,334.60 is: 597,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,273.80 : 996,410.70 = 398,334.60 : x
  2. Step 2: Convert to fraction form
    664,273.80/996,410.70 = 398,334.60/x
  3. Step 3: Cross multiply
    664,273.80x = 996,410.70 × 398,334.60
  4. Step 4: Simplify right side
    664,273.80x = 396,904,857,620.22
  5. Step 5: Solve for x
    x = 396,904,857,620.22/664,273.80
  6. Step 6: Final answer
    x = 597,501.90

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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.