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Finding the Third Proportional to 29,412 and 63,928

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Solution

The third proportional to 29,412 and 63,928 is: 138,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,412 : 63,928 = 63,928 : x
  2. Step 2: Convert to fraction form
    29,412/63,928 = 63,928/x
  3. Step 3: Cross multiply
    29,412x = 63,928 × 63,928
  4. Step 4: Simplify right side
    29,412x = 4,086,789,184
  5. Step 5: Solve for x
    x = 4,086,789,184/29,412
  6. Step 6: Final answer
    x = 138,949.72

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.