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Finding the Third Proportional to 54,686 and 117,907

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Solution

The third proportional to 54,686 and 117,907 is: 254,216.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,686 : 117,907 = 117,907 : x
  2. Step 2: Convert to fraction form
    54,686/117,907 = 117,907/x
  3. Step 3: Cross multiply
    54,686x = 117,907 × 117,907
  4. Step 4: Simplify right side
    54,686x = 13,902,060,649
  5. Step 5: Solve for x
    x = 13,902,060,649/54,686
  6. Step 6: Final answer
    x = 254,216.08

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.