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Finding the Third Proportional to 12,961.50 and 27,039

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Solution

The third proportional to 12,961.50 and 27,039 is: 56,406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.50 : 27,039 = 27,039 : x
  2. Step 2: Convert to fraction form
    12,961.50/27,039 = 27,039/x
  3. Step 3: Cross multiply
    12,961.50x = 27,039 × 27,039
  4. Step 4: Simplify right side
    12,961.50x = 731,107,521
  5. Step 5: Solve for x
    x = 731,107,521/12,961.50
  6. Step 6: Final answer
    x = 56,406.09

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.