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Finding the Third Proportional to 958.50 and 1,869

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Solution

The third proportional to 958.50 and 1,869 is: 3,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.50 : 1,869 = 1,869 : x
  2. Step 2: Convert to fraction form
    958.50/1,869 = 1,869/x
  3. Step 3: Cross multiply
    958.50x = 1,869 × 1,869
  4. Step 4: Simplify right side
    958.50x = 3,493,161
  5. Step 5: Solve for x
    x = 3,493,161/958.50
  6. Step 6: Final answer
    x = 3,644.40

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.