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Finding the Third Proportional to 8,890 and 13,944

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Solution

The third proportional to 8,890 and 13,944 is: 21,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890 : 13,944 = 13,944 : x
  2. Step 2: Convert to fraction form
    8,890/13,944 = 13,944/x
  3. Step 3: Cross multiply
    8,890x = 13,944 × 13,944
  4. Step 4: Simplify right side
    8,890x = 194,435,136
  5. Step 5: Solve for x
    x = 194,435,136/8,890
  6. Step 6: Final answer
    x = 21,871.22

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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.