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Finding the Third Proportional to 11,922.75 and 18,874.50

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Solution

The third proportional to 11,922.75 and 18,874.50 is: 29,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.75 : 18,874.50 = 18,874.50 : x
  2. Step 2: Convert to fraction form
    11,922.75/18,874.50 = 18,874.50/x
  3. Step 3: Cross multiply
    11,922.75x = 18,874.50 × 18,874.50
  4. Step 4: Simplify right side
    11,922.75x = 356,246,750.25
  5. Step 5: Solve for x
    x = 356,246,750.25/11,922.75
  6. Step 6: Final answer
    x = 29,879.58

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.