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Finding the Third Proportional to 84,781.13 and 131,157

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Solution

The third proportional to 84,781.13 and 131,157 is: 202,900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,781.13 : 131,157 = 131,157 : x
  2. Step 2: Convert to fraction form
    84,781.13/131,157 = 131,157/x
  3. Step 3: Cross multiply
    84,781.13x = 131,157 × 131,157
  4. Step 4: Simplify right side
    84,781.13x = 17,202,158,649
  5. Step 5: Solve for x
    x = 17,202,158,649/84,781.13
  6. Step 6: Final answer
    x = 202,900.81

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.