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Finding the Third Proportional to 1,786 and 3,316

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Solution

The third proportional to 1,786 and 3,316 is: 6,156.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786 : 3,316 = 3,316 : x
  2. Step 2: Convert to fraction form
    1,786/3,316 = 3,316/x
  3. Step 3: Cross multiply
    1,786x = 3,316 × 3,316
  4. Step 4: Simplify right side
    1,786x = 10,995,856
  5. Step 5: Solve for x
    x = 10,995,856/1,786
  6. Step 6: Final answer
    x = 6,156.69

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.