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Finding the Third Proportional to 28,174 and 43,878

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Solution

The third proportional to 28,174 and 43,878 is: 68,335.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174 : 43,878 = 43,878 : x
  2. Step 2: Convert to fraction form
    28,174/43,878 = 43,878/x
  3. Step 3: Cross multiply
    28,174x = 43,878 × 43,878
  4. Step 4: Simplify right side
    28,174x = 1,925,278,884
  5. Step 5: Solve for x
    x = 1,925,278,884/28,174
  6. Step 6: Final answer
    x = 68,335.31

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.