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Finding the Third Proportional to 936 and 2,136

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Solution

The third proportional to 936 and 2,136 is: 4,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    936 : 2,136 = 2,136 : x
  2. Step 2: Convert to fraction form
    936/2,136 = 2,136/x
  3. Step 3: Cross multiply
    936x = 2,136 × 2,136
  4. Step 4: Simplify right side
    936x = 4,562,496
  5. Step 5: Solve for x
    x = 4,562,496/936
  6. Step 6: Final answer
    x = 4,874.46

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.