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Finding the Third Proportional to 2,976 and 7,176

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Solution

The third proportional to 2,976 and 7,176 is: 17,303.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976 : 7,176 = 7,176 : x
  2. Step 2: Convert to fraction form
    2,976/7,176 = 7,176/x
  3. Step 3: Cross multiply
    2,976x = 7,176 × 7,176
  4. Step 4: Simplify right side
    2,976x = 51,494,976
  5. Step 5: Solve for x
    x = 51,494,976/2,976
  6. Step 6: Final answer
    x = 17,303.42

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.