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Finding the Third Proportional to 2,587 and 5,261

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Solution

The third proportional to 2,587 and 5,261 is: 10,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587 : 5,261 = 5,261 : x
  2. Step 2: Convert to fraction form
    2,587/5,261 = 5,261/x
  3. Step 3: Cross multiply
    2,587x = 5,261 × 5,261
  4. Step 4: Simplify right side
    2,587x = 27,678,121
  5. Step 5: Solve for x
    x = 27,678,121/2,587
  6. Step 6: Final answer
    x = 10,698.93

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.