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Finding the Third Proportional to 43,856 and 68,031

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Solution

The third proportional to 43,856 and 68,031 is: 105,532.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,856 : 68,031 = 68,031 : x
  2. Step 2: Convert to fraction form
    43,856/68,031 = 68,031/x
  3. Step 3: Cross multiply
    43,856x = 68,031 × 68,031
  4. Step 4: Simplify right side
    43,856x = 4,628,216,961
  5. Step 5: Solve for x
    x = 4,628,216,961/43,856
  6. Step 6: Final answer
    x = 105,532.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.