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Finding the Third Proportional to 48,780 and 107,712

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Solution

The third proportional to 48,780 and 107,712 is: 237,840.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,780 : 107,712 = 107,712 : x
  2. Step 2: Convert to fraction form
    48,780/107,712 = 107,712/x
  3. Step 3: Cross multiply
    48,780x = 107,712 × 107,712
  4. Step 4: Simplify right side
    48,780x = 11,601,874,944
  5. Step 5: Solve for x
    x = 11,601,874,944/48,780
  6. Step 6: Final answer
    x = 237,840.81

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.