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Finding the Third Proportional to 1,917.19 and 4,136.44

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Solution

The third proportional to 1,917.19 and 4,136.44 is: 8,924.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.19 : 4,136.44 = 4,136.44 : x
  2. Step 2: Convert to fraction form
    1,917.19/4,136.44 = 4,136.44/x
  3. Step 3: Cross multiply
    1,917.19x = 4,136.44 × 4,136.44
  4. Step 4: Simplify right side
    1,917.19x = 17,110,115.19
  5. Step 5: Solve for x
    x = 17,110,115.19/1,917.19
  6. Step 6: Final answer
    x = 8,924.59

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.