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Finding the Third Proportional to 27,748.50 and 61,021

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Solution

The third proportional to 27,748.50 and 61,021 is: 134,189.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.50 : 61,021 = 61,021 : x
  2. Step 2: Convert to fraction form
    27,748.50/61,021 = 61,021/x
  3. Step 3: Cross multiply
    27,748.50x = 61,021 × 61,021
  4. Step 4: Simplify right side
    27,748.50x = 3,723,562,441
  5. Step 5: Solve for x
    x = 3,723,562,441/27,748.50
  6. Step 6: Final answer
    x = 134,189.68

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.