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Finding the Third Proportional to 18,857 and 39,245.75

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Solution

The third proportional to 18,857 and 39,245.75 is: 81,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857 : 39,245.75 = 39,245.75 : x
  2. Step 2: Convert to fraction form
    18,857/39,245.75 = 39,245.75/x
  3. Step 3: Cross multiply
    18,857x = 39,245.75 × 39,245.75
  4. Step 4: Simplify right side
    18,857x = 1,540,228,893.06
  5. Step 5: Solve for x
    x = 1,540,228,893.06/18,857
  6. Step 6: Final answer
    x = 81,679.42

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.