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Finding the Third Proportional to 11,326 and 12,190

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Solution

The third proportional to 11,326 and 12,190 is: 13,119.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,326 : 12,190 = 12,190 : x
  2. Step 2: Convert to fraction form
    11,326/12,190 = 12,190/x
  3. Step 3: Cross multiply
    11,326x = 12,190 × 12,190
  4. Step 4: Simplify right side
    11,326x = 148,596,100
  5. Step 5: Solve for x
    x = 148,596,100/11,326
  6. Step 6: Final answer
    x = 13,119.91

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.