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Finding the Third Proportional to 4,642 and 7,183

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Solution

The third proportional to 4,642 and 7,183 is: 11,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,642 : 7,183 = 7,183 : x
  2. Step 2: Convert to fraction form
    4,642/7,183 = 7,183/x
  3. Step 3: Cross multiply
    4,642x = 7,183 × 7,183
  4. Step 4: Simplify right side
    4,642x = 51,595,489
  5. Step 5: Solve for x
    x = 51,595,489/4,642
  6. Step 6: Final answer
    x = 11,114.93

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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.