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Finding the Third Proportional to 1,611 and 4,316

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Solution

The third proportional to 1,611 and 4,316 is: 11,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611 : 4,316 = 4,316 : x
  2. Step 2: Convert to fraction form
    1,611/4,316 = 4,316/x
  3. Step 3: Cross multiply
    1,611x = 4,316 × 4,316
  4. Step 4: Simplify right side
    1,611x = 18,627,856
  5. Step 5: Solve for x
    x = 18,627,856/1,611
  6. Step 6: Final answer
    x = 11,562.91

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Why These Related Problems?

These problems maintain the same ratio (2.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.