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Finding the Third Proportional to 48,809 and 66,300

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Solution

The third proportional to 48,809 and 66,300 is: 90,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,809 : 66,300 = 66,300 : x
  2. Step 2: Convert to fraction form
    48,809/66,300 = 66,300/x
  3. Step 3: Cross multiply
    48,809x = 66,300 × 66,300
  4. Step 4: Simplify right side
    48,809x = 4,395,690,000
  5. Step 5: Solve for x
    x = 4,395,690,000/48,809
  6. Step 6: Final answer
    x = 90,059.01

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.