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Finding the Third Proportional to 42,858 and 92,293

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Solution

The third proportional to 42,858 and 92,293 is: 198,749.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,858 : 92,293 = 92,293 : x
  2. Step 2: Convert to fraction form
    42,858/92,293 = 92,293/x
  3. Step 3: Cross multiply
    42,858x = 92,293 × 92,293
  4. Step 4: Simplify right side
    42,858x = 8,517,997,849
  5. Step 5: Solve for x
    x = 8,517,997,849/42,858
  6. Step 6: Final answer
    x = 198,749.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.