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Finding the Third Proportional to 9,186 and 13,431

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Solution

The third proportional to 9,186 and 13,431 is: 19,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186 : 13,431 = 13,431 : x
  2. Step 2: Convert to fraction form
    9,186/13,431 = 13,431/x
  3. Step 3: Cross multiply
    9,186x = 13,431 × 13,431
  4. Step 4: Simplify right side
    9,186x = 180,391,761
  5. Step 5: Solve for x
    x = 180,391,761/9,186
  6. Step 6: Final answer
    x = 19,637.68

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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.