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Finding the Third Proportional to 18,961 and 28,702

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Solution

The third proportional to 18,961 and 28,702 is: 43,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961 : 28,702 = 28,702 : x
  2. Step 2: Convert to fraction form
    18,961/28,702 = 28,702/x
  3. Step 3: Cross multiply
    18,961x = 28,702 × 28,702
  4. Step 4: Simplify right side
    18,961x = 823,804,804
  5. Step 5: Solve for x
    x = 823,804,804/18,961
  6. Step 6: Final answer
    x = 43,447.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.