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Finding the Third Proportional to 86,224 and 129,656

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Solution

The third proportional to 86,224 and 129,656 is: 194,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,224 : 129,656 = 129,656 : x
  2. Step 2: Convert to fraction form
    86,224/129,656 = 129,656/x
  3. Step 3: Cross multiply
    86,224x = 129,656 × 129,656
  4. Step 4: Simplify right side
    86,224x = 16,810,678,336
  5. Step 5: Solve for x
    x = 16,810,678,336/86,224
  6. Step 6: Final answer
    x = 194,965.19

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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.