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Finding the Fourth Proportional to 664,160.80, 996,241.20 and 220,928.80

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Solution

The fourth proportional to 664,160.80, 996,241.20 and 220,928.80 is: 331,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,160.80 : 996,241.20 = 220,928.80 : x
  2. Step 2: Convert to fraction form
    664,160.80/996,241.20 = 220,928.80/x
  3. Step 3: Cross multiply
    664,160.80x = 996,241.20 × 220,928.80
  4. Step 4: Simplify right side
    664,160.80x = 220,098,372,826.56
  5. Step 5: Solve for x
    x = 220,098,372,826.56/664,160.80
  6. Step 6: Final answer
    x = 331,393.20

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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.