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Finding the Third Proportional to 48,918 and 66,057

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Solution

The third proportional to 48,918 and 66,057 is: 89,200.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,918 : 66,057 = 66,057 : x
  2. Step 2: Convert to fraction form
    48,918/66,057 = 66,057/x
  3. Step 3: Cross multiply
    48,918x = 66,057 × 66,057
  4. Step 4: Simplify right side
    48,918x = 4,363,527,249
  5. Step 5: Solve for x
    x = 4,363,527,249/48,918
  6. Step 6: Final answer
    x = 89,200.85

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.