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Finding the Third Proportional to 55,549 and 79,379

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Solution

The third proportional to 55,549 and 79,379 is: 113,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,549 : 79,379 = 79,379 : x
  2. Step 2: Convert to fraction form
    55,549/79,379 = 79,379/x
  3. Step 3: Cross multiply
    55,549x = 79,379 × 79,379
  4. Step 4: Simplify right side
    55,549x = 6,301,025,641
  5. Step 5: Solve for x
    x = 6,301,025,641/55,549
  6. Step 6: Final answer
    x = 113,431.85

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.