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Finding the Fourth Proportional to 664,302.80, 996,454.20 and 165,666.80

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Solution

The fourth proportional to 664,302.80, 996,454.20 and 165,666.80 is: 248,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,302.80 : 996,454.20 = 165,666.80 : x
  2. Step 2: Convert to fraction form
    664,302.80/996,454.20 = 165,666.80/x
  3. Step 3: Cross multiply
    664,302.80x = 996,454.20 × 165,666.80
  4. Step 4: Simplify right side
    664,302.80x = 165,079,378,660.56
  5. Step 5: Solve for x
    x = 165,079,378,660.56/664,302.80
  6. Step 6: Final answer
    x = 248,500.20

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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.