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Finding the Fourth Proportional to 666,190.70, 998,793.57 and 345,882.68

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Solution

The fourth proportional to 666,190.70, 998,793.57 and 345,882.68 is: 518,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,190.70 : 998,793.57 = 345,882.68 : x
  2. Step 2: Convert to fraction form
    666,190.70/998,793.57 = 345,882.68/x
  3. Step 3: Cross multiply
    666,190.70x = 998,793.57 × 345,882.68
  4. Step 4: Simplify right side
    666,190.70x = 345,465,396,758.37
  5. Step 5: Solve for x
    x = 345,465,396,758.37/666,190.70
  6. Step 6: Final answer
    x = 518,568.33

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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.