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Finding the Third Proportional to 11,176 and 15,636

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Solution

The third proportional to 11,176 and 15,636 is: 21,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,176 : 15,636 = 15,636 : x
  2. Step 2: Convert to fraction form
    11,176/15,636 = 15,636/x
  3. Step 3: Cross multiply
    11,176x = 15,636 × 15,636
  4. Step 4: Simplify right side
    11,176x = 244,484,496
  5. Step 5: Solve for x
    x = 244,484,496/11,176
  6. Step 6: Final answer
    x = 21,875.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.