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Finding the Fourth Proportional to 665,389.20, 998,229.60 and 216,033.60

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Solution

The fourth proportional to 665,389.20, 998,229.60 and 216,033.60 is: 324,097.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,389.20 : 998,229.60 = 216,033.60 : x
  2. Step 2: Convert to fraction form
    665,389.20/998,229.60 = 216,033.60/x
  3. Step 3: Cross multiply
    665,389.20x = 998,229.60 × 216,033.60
  4. Step 4: Simplify right side
    665,389.20x = 215,651,134,114.56
  5. Step 5: Solve for x
    x = 215,651,134,114.56/665,389.20
  6. Step 6: Final answer
    x = 324,097.74

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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.