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Finding the Third Proportional to 20,734.50 and 31,251

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Solution

The third proportional to 20,734.50 and 31,251 is: 47,101.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.50 : 31,251 = 31,251 : x
  2. Step 2: Convert to fraction form
    20,734.50/31,251 = 31,251/x
  3. Step 3: Cross multiply
    20,734.50x = 31,251 × 31,251
  4. Step 4: Simplify right side
    20,734.50x = 976,625,001
  5. Step 5: Solve for x
    x = 976,625,001/20,734.50
  6. Step 6: Final answer
    x = 47,101.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.