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Finding the Third Proportional to 888.50 and 1,918

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Solution

The third proportional to 888.50 and 1,918 is: 4,140.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.50 : 1,918 = 1,918 : x
  2. Step 2: Convert to fraction form
    888.50/1,918 = 1,918/x
  3. Step 3: Cross multiply
    888.50x = 1,918 × 1,918
  4. Step 4: Simplify right side
    888.50x = 3,678,724
  5. Step 5: Solve for x
    x = 3,678,724/888.50
  6. Step 6: Final answer
    x = 4,140.38

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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.