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Finding the Fourth Proportional to 266,122.20, 399,183.30 and 253,000.20

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Solution

The fourth proportional to 266,122.20, 399,183.30 and 253,000.20 is: 379,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,122.20 : 399,183.30 = 253,000.20 : x
  2. Step 2: Convert to fraction form
    266,122.20/399,183.30 = 253,000.20/x
  3. Step 3: Cross multiply
    266,122.20x = 399,183.30 × 253,000.20
  4. Step 4: Simplify right side
    266,122.20x = 100,993,454,736.66
  5. Step 5: Solve for x
    x = 100,993,454,736.66/266,122.20
  6. Step 6: Final answer
    x = 379,500.30

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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.