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Finding the Third Proportional to 866.50 and 1,888

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Solution

The third proportional to 866.50 and 1,888 is: 4,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.50 : 1,888 = 1,888 : x
  2. Step 2: Convert to fraction form
    866.50/1,888 = 1,888/x
  3. Step 3: Cross multiply
    866.50x = 1,888 × 1,888
  4. Step 4: Simplify right side
    866.50x = 3,564,544
  5. Step 5: Solve for x
    x = 3,564,544/866.50
  6. Step 6: Final answer
    x = 4,113.73

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.