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Finding the Third Proportional to 8,862 and 13,929

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Solution

The third proportional to 8,862 and 13,929 is: 21,893.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862 : 13,929 = 13,929 : x
  2. Step 2: Convert to fraction form
    8,862/13,929 = 13,929/x
  3. Step 3: Cross multiply
    8,862x = 13,929 × 13,929
  4. Step 4: Simplify right side
    8,862x = 194,017,041
  5. Step 5: Solve for x
    x = 194,017,041/8,862
  6. Step 6: Final answer
    x = 21,893.14

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.