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Finding the Third Proportional to 68,874.75 and 106,429

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Solution

The third proportional to 68,874.75 and 106,429 is: 164,459.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,874.75 : 106,429 = 106,429 : x
  2. Step 2: Convert to fraction form
    68,874.75/106,429 = 106,429/x
  3. Step 3: Cross multiply
    68,874.75x = 106,429 × 106,429
  4. Step 4: Simplify right side
    68,874.75x = 11,327,132,041
  5. Step 5: Solve for x
    x = 11,327,132,041/68,874.75
  6. Step 6: Final answer
    x = 164,459.86

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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.