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Finding the Third Proportional to 4,774 and 7,408

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Solution

The third proportional to 4,774 and 7,408 is: 11,495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,774 : 7,408 = 7,408 : x
  2. Step 2: Convert to fraction form
    4,774/7,408 = 7,408/x
  3. Step 3: Cross multiply
    4,774x = 7,408 × 7,408
  4. Step 4: Simplify right side
    4,774x = 54,878,464
  5. Step 5: Solve for x
    x = 54,878,464/4,774
  6. Step 6: Final answer
    x = 11,495.28

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.