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Finding the Third Proportional to 2,006 and 5,129

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Solution

The third proportional to 2,006 and 5,129 is: 13,113.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006 : 5,129 = 5,129 : x
  2. Step 2: Convert to fraction form
    2,006/5,129 = 5,129/x
  3. Step 3: Cross multiply
    2,006x = 5,129 × 5,129
  4. Step 4: Simplify right side
    2,006x = 26,306,641
  5. Step 5: Solve for x
    x = 26,306,641/2,006
  6. Step 6: Final answer
    x = 13,113.98

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.