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Finding the Third Proportional to 11,864 and 19,113

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Solution

The third proportional to 11,864 and 19,113 is: 30,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,864 : 19,113 = 19,113 : x
  2. Step 2: Convert to fraction form
    11,864/19,113 = 19,113/x
  3. Step 3: Cross multiply
    11,864x = 19,113 × 19,113
  4. Step 4: Simplify right side
    11,864x = 365,306,769
  5. Step 5: Solve for x
    x = 365,306,769/11,864
  6. Step 6: Final answer
    x = 30,791.20

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.