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Finding the Third Proportional to 889.75 and 1,916

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Solution

The third proportional to 889.75 and 1,916 is: 4,125.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.75 : 1,916 = 1,916 : x
  2. Step 2: Convert to fraction form
    889.75/1,916 = 1,916/x
  3. Step 3: Cross multiply
    889.75x = 1,916 × 1,916
  4. Step 4: Simplify right side
    889.75x = 3,671,056
  5. Step 5: Solve for x
    x = 3,671,056/889.75
  6. Step 6: Final answer
    x = 4,125.94

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.