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Finding the Third Proportional to 55,213.50 and 85,653

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Solution

The third proportional to 55,213.50 and 85,653 is: 132,873.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,213.50 : 85,653 = 85,653 : x
  2. Step 2: Convert to fraction form
    55,213.50/85,653 = 85,653/x
  3. Step 3: Cross multiply
    55,213.50x = 85,653 × 85,653
  4. Step 4: Simplify right side
    55,213.50x = 7,336,436,409
  5. Step 5: Solve for x
    x = 7,336,436,409/55,213.50
  6. Step 6: Final answer
    x = 132,873.96

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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.