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Finding the Third Proportional to 83,398 and 125,820

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Solution

The third proportional to 83,398 and 125,820 is: 189,820.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,398 : 125,820 = 125,820 : x
  2. Step 2: Convert to fraction form
    83,398/125,820 = 125,820/x
  3. Step 3: Cross multiply
    83,398x = 125,820 × 125,820
  4. Step 4: Simplify right side
    83,398x = 15,830,672,400
  5. Step 5: Solve for x
    x = 15,830,672,400/83,398
  6. Step 6: Final answer
    x = 189,820.77

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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.