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Finding the Fourth Proportional to 665,626.60, 998,439.90 and 192,327.40

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Solution

The fourth proportional to 665,626.60, 998,439.90 and 192,327.40 is: 288,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,626.60 : 998,439.90 = 192,327.40 : x
  2. Step 2: Convert to fraction form
    665,626.60/998,439.90 = 192,327.40/x
  3. Step 3: Cross multiply
    665,626.60x = 998,439.90 × 192,327.40
  4. Step 4: Simplify right side
    665,626.60x = 192,027,350,023.26
  5. Step 5: Solve for x
    x = 192,027,350,023.26/665,626.60
  6. Step 6: Final answer
    x = 288,491.10

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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.