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Finding the Third Proportional to 4,178 and 8,824

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Solution

The third proportional to 4,178 and 8,824 is: 18,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178 : 8,824 = 8,824 : x
  2. Step 2: Convert to fraction form
    4,178/8,824 = 8,824/x
  3. Step 3: Cross multiply
    4,178x = 8,824 × 8,824
  4. Step 4: Simplify right side
    4,178x = 77,862,976
  5. Step 5: Solve for x
    x = 77,862,976/4,178
  6. Step 6: Final answer
    x = 18,636.42

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.