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Finding the Third Proportional to 5,980 and 9,078

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Solution

The third proportional to 5,980 and 9,078 is: 13,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,980 : 9,078 = 9,078 : x
  2. Step 2: Convert to fraction form
    5,980/9,078 = 9,078/x
  3. Step 3: Cross multiply
    5,980x = 9,078 × 9,078
  4. Step 4: Simplify right side
    5,980x = 82,410,084
  5. Step 5: Solve for x
    x = 82,410,084/5,980
  6. Step 6: Final answer
    x = 13,780.95

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.