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Finding the Fourth Proportional to 605,800.70, 908,701.05 and 206,891.90

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Solution

The fourth proportional to 605,800.70, 908,701.05 and 206,891.90 is: 310,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,800.70 : 908,701.05 = 206,891.90 : x
  2. Step 2: Convert to fraction form
    605,800.70/908,701.05 = 206,891.90/x
  3. Step 3: Cross multiply
    605,800.70x = 908,701.05 × 206,891.90
  4. Step 4: Simplify right side
    605,800.70x = 188,002,886,766.50
  5. Step 5: Solve for x
    x = 188,002,886,766.50/605,800.70
  6. Step 6: Final answer
    x = 310,337.85

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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.