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Finding the Third Proportional to 3,860 and 5,623

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Solution

The third proportional to 3,860 and 5,623 is: 8,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860 : 5,623 = 5,623 : x
  2. Step 2: Convert to fraction form
    3,860/5,623 = 5,623/x
  3. Step 3: Cross multiply
    3,860x = 5,623 × 5,623
  4. Step 4: Simplify right side
    3,860x = 31,618,129
  5. Step 5: Solve for x
    x = 31,618,129/3,860
  6. Step 6: Final answer
    x = 8,191.23

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.