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Finding the Third Proportional to 75,305 and 112,961

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Solution

The third proportional to 75,305 and 112,961 is: 169,446.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,305 : 112,961 = 112,961 : x
  2. Step 2: Convert to fraction form
    75,305/112,961 = 112,961/x
  3. Step 3: Cross multiply
    75,305x = 112,961 × 112,961
  4. Step 4: Simplify right side
    75,305x = 12,760,187,521
  5. Step 5: Solve for x
    x = 12,760,187,521/75,305
  6. Step 6: Final answer
    x = 169,446.75

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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.