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Finding the Third Proportional to 17,720 and 26,236

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Solution

The third proportional to 17,720 and 26,236 is: 38,844.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720 : 26,236 = 26,236 : x
  2. Step 2: Convert to fraction form
    17,720/26,236 = 26,236/x
  3. Step 3: Cross multiply
    17,720x = 26,236 × 26,236
  4. Step 4: Simplify right side
    17,720x = 688,327,696
  5. Step 5: Solve for x
    x = 688,327,696/17,720
  6. Step 6: Final answer
    x = 38,844.68

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.