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Finding the Third Proportional to 55,042.50 and 87,474

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Solution

The third proportional to 55,042.50 and 87,474 is: 139,014.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,042.50 : 87,474 = 87,474 : x
  2. Step 2: Convert to fraction form
    55,042.50/87,474 = 87,474/x
  3. Step 3: Cross multiply
    55,042.50x = 87,474 × 87,474
  4. Step 4: Simplify right side
    55,042.50x = 7,651,700,676
  5. Step 5: Solve for x
    x = 7,651,700,676/55,042.50
  6. Step 6: Final answer
    x = 139,014.41

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.