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Finding the Third Proportional to 86,581 and 129,523

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Solution

The third proportional to 86,581 and 129,523 is: 193,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581 : 129,523 = 129,523 : x
  2. Step 2: Convert to fraction form
    86,581/129,523 = 129,523/x
  3. Step 3: Cross multiply
    86,581x = 129,523 × 129,523
  4. Step 4: Simplify right side
    86,581x = 16,776,207,529
  5. Step 5: Solve for x
    x = 16,776,207,529/86,581
  6. Step 6: Final answer
    x = 193,763.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.