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Finding the Third Proportional to 55,891 and 84,560

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Solution

The third proportional to 55,891 and 84,560 is: 127,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891 : 84,560 = 84,560 : x
  2. Step 2: Convert to fraction form
    55,891/84,560 = 84,560/x
  3. Step 3: Cross multiply
    55,891x = 84,560 × 84,560
  4. Step 4: Simplify right side
    55,891x = 7,150,393,600
  5. Step 5: Solve for x
    x = 7,150,393,600/55,891
  6. Step 6: Final answer
    x = 127,934.62

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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.