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Finding the Third Proportional to 4,774 and 5,190

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Solution

The third proportional to 4,774 and 5,190 is: 5,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,774 : 5,190 = 5,190 : x
  2. Step 2: Convert to fraction form
    4,774/5,190 = 5,190/x
  3. Step 3: Cross multiply
    4,774x = 5,190 × 5,190
  4. Step 4: Simplify right side
    4,774x = 26,936,100
  5. Step 5: Solve for x
    x = 26,936,100/4,774
  6. Step 6: Final answer
    x = 5,642.25

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.