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Finding the Third Proportional to 18,781 and 26,255

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Solution

The third proportional to 18,781 and 26,255 is: 36,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781 : 26,255 = 26,255 : x
  2. Step 2: Convert to fraction form
    18,781/26,255 = 26,255/x
  3. Step 3: Cross multiply
    18,781x = 26,255 × 26,255
  4. Step 4: Simplify right side
    18,781x = 689,325,025
  5. Step 5: Solve for x
    x = 689,325,025/18,781
  6. Step 6: Final answer
    x = 36,703.32

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.