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Finding the Third Proportional to 11,832 and 15,786

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Solution

The third proportional to 11,832 and 15,786 is: 21,061.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,832 : 15,786 = 15,786 : x
  2. Step 2: Convert to fraction form
    11,832/15,786 = 15,786/x
  3. Step 3: Cross multiply
    11,832x = 15,786 × 15,786
  4. Step 4: Simplify right side
    11,832x = 249,197,796
  5. Step 5: Solve for x
    x = 249,197,796/11,832
  6. Step 6: Final answer
    x = 21,061.34

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.