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Finding the Third Proportional to 48,939 and 75,621

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Solution

The third proportional to 48,939 and 75,621 is: 116,850.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,939 : 75,621 = 75,621 : x
  2. Step 2: Convert to fraction form
    48,939/75,621 = 75,621/x
  3. Step 3: Cross multiply
    48,939x = 75,621 × 75,621
  4. Step 4: Simplify right side
    48,939x = 5,718,535,641
  5. Step 5: Solve for x
    x = 5,718,535,641/48,939
  6. Step 6: Final answer
    x = 116,850.28

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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.