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Finding the Third Proportional to 1,086 and 2,316

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Solution

The third proportional to 1,086 and 2,316 is: 4,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086 : 2,316 = 2,316 : x
  2. Step 2: Convert to fraction form
    1,086/2,316 = 2,316/x
  3. Step 3: Cross multiply
    1,086x = 2,316 × 2,316
  4. Step 4: Simplify right side
    1,086x = 5,363,856
  5. Step 5: Solve for x
    x = 5,363,856/1,086
  6. Step 6: Final answer
    x = 4,939.09

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.