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Finding the Fourth Proportional to 207,286.26, 310,939.11 and 67,055.82

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Solution

The fourth proportional to 207,286.26, 310,939.11 and 67,055.82 is: 100,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,286.26 : 310,939.11 = 67,055.82 : x
  2. Step 2: Convert to fraction form
    207,286.26/310,939.11 = 67,055.82/x
  3. Step 3: Cross multiply
    207,286.26x = 310,939.11 × 67,055.82
  4. Step 4: Simplify right side
    207,286.26x = 20,850,276,991.12
  5. Step 5: Solve for x
    x = 20,850,276,991.12/207,286.26
  6. Step 6: Final answer
    x = 100,586.87

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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.