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Finding the Third Proportional to 1,886 and 2,918

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Solution

The third proportional to 1,886 and 2,918 is: 4,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886 : 2,918 = 2,918 : x
  2. Step 2: Convert to fraction form
    1,886/2,918 = 2,918/x
  3. Step 3: Cross multiply
    1,886x = 2,918 × 2,918
  4. Step 4: Simplify right side
    1,886x = 8,514,724
  5. Step 5: Solve for x
    x = 8,514,724/1,886
  6. Step 6: Final answer
    x = 4,514.70

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.