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Finding the Third Proportional to 4,406 and 4,778

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Solution

The third proportional to 4,406 and 4,778 is: 5,181.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,406 : 4,778 = 4,778 : x
  2. Step 2: Convert to fraction form
    4,406/4,778 = 4,778/x
  3. Step 3: Cross multiply
    4,406x = 4,778 × 4,778
  4. Step 4: Simplify right side
    4,406x = 22,829,284
  5. Step 5: Solve for x
    x = 22,829,284/4,406
  6. Step 6: Final answer
    x = 5,181.41

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.