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Finding the Third Proportional to 866.25 and 1,894.50

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Solution

The third proportional to 866.25 and 1,894.50 is: 4,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.25 : 1,894.50 = 1,894.50 : x
  2. Step 2: Convert to fraction form
    866.25/1,894.50 = 1,894.50/x
  3. Step 3: Cross multiply
    866.25x = 1,894.50 × 1,894.50
  4. Step 4: Simplify right side
    866.25x = 3,589,130.25
  5. Step 5: Solve for x
    x = 3,589,130.25/866.25
  6. Step 6: Final answer
    x = 4,143.30

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.