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Finding the Third Proportional to 15,891 and 34,212

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Solution

The third proportional to 15,891 and 34,212 is: 73,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891 : 34,212 = 34,212 : x
  2. Step 2: Convert to fraction form
    15,891/34,212 = 34,212/x
  3. Step 3: Cross multiply
    15,891x = 34,212 × 34,212
  4. Step 4: Simplify right side
    15,891x = 1,170,460,944
  5. Step 5: Solve for x
    x = 1,170,460,944/15,891
  6. Step 6: Final answer
    x = 73,655.59

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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.