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Finding the Third Proportional to 54,160 and 79,760

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Solution

The third proportional to 54,160 and 79,760 is: 117,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,160 : 79,760 = 79,760 : x
  2. Step 2: Convert to fraction form
    54,160/79,760 = 79,760/x
  3. Step 3: Cross multiply
    54,160x = 79,760 × 79,760
  4. Step 4: Simplify right side
    54,160x = 6,361,657,600
  5. Step 5: Solve for x
    x = 6,361,657,600/54,160
  6. Step 6: Final answer
    x = 117,460.44

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.