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Finding the Fourth Proportional to 664,248.60, 996,372.90 and 190,906.20

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Solution

The fourth proportional to 664,248.60, 996,372.90 and 190,906.20 is: 286,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,248.60 : 996,372.90 = 190,906.20 : x
  2. Step 2: Convert to fraction form
    664,248.60/996,372.90 = 190,906.20/x
  3. Step 3: Cross multiply
    664,248.60x = 996,372.90 × 190,906.20
  4. Step 4: Simplify right side
    664,248.60x = 190,213,764,121.98
  5. Step 5: Solve for x
    x = 190,213,764,121.98/664,248.60
  6. Step 6: Final answer
    x = 286,359.30

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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.