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Finding the Third Proportional to 18,470 and 39,625

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Solution

The third proportional to 18,470 and 39,625 is: 85,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470 : 39,625 = 39,625 : x
  2. Step 2: Convert to fraction form
    18,470/39,625 = 39,625/x
  3. Step 3: Cross multiply
    18,470x = 39,625 × 39,625
  4. Step 4: Simplify right side
    18,470x = 1,570,140,625
  5. Step 5: Solve for x
    x = 1,570,140,625/18,470
  6. Step 6: Final answer
    x = 85,010.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.