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Finding the Third Proportional to 18,434.25 and 40,149

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Solution

The third proportional to 18,434.25 and 40,149 is: 87,442.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,434.25 : 40,149 = 40,149 : x
  2. Step 2: Convert to fraction form
    18,434.25/40,149 = 40,149/x
  3. Step 3: Cross multiply
    18,434.25x = 40,149 × 40,149
  4. Step 4: Simplify right side
    18,434.25x = 1,611,942,201
  5. Step 5: Solve for x
    x = 1,611,942,201/18,434.25
  6. Step 6: Final answer
    x = 87,442.79

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.