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Finding the Fourth Proportional to 207,471.84, 311,185.08 and 67,192.80

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Solution

The fourth proportional to 207,471.84, 311,185.08 and 67,192.80 is: 100,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,471.84 : 311,185.08 = 67,192.80 : x
  2. Step 2: Convert to fraction form
    207,471.84/311,185.08 = 67,192.80/x
  3. Step 3: Cross multiply
    207,471.84x = 311,185.08 × 67,192.80
  4. Step 4: Simplify right side
    207,471.84x = 20,909,396,843.42
  5. Step 5: Solve for x
    x = 20,909,396,843.42/207,471.84
  6. Step 6: Final answer
    x = 100,781.85

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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.