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Finding the Third Proportional to 39,455.50 and 55,497

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Solution

The third proportional to 39,455.50 and 55,497 is: 78,060.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.50 : 55,497 = 55,497 : x
  2. Step 2: Convert to fraction form
    39,455.50/55,497 = 55,497/x
  3. Step 3: Cross multiply
    39,455.50x = 55,497 × 55,497
  4. Step 4: Simplify right side
    39,455.50x = 3,079,917,009
  5. Step 5: Solve for x
    x = 3,079,917,009/39,455.50
  6. Step 6: Final answer
    x = 78,060.52

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.