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Finding the Third Proportional to 853.50 and 939

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Solution

The third proportional to 853.50 and 939 is: 1,033.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.50 : 939 = 939 : x
  2. Step 2: Convert to fraction form
    853.50/939 = 939/x
  3. Step 3: Cross multiply
    853.50x = 939 × 939
  4. Step 4: Simplify right side
    853.50x = 881,721
  5. Step 5: Solve for x
    x = 881,721/853.50
  6. Step 6: Final answer
    x = 1,033.07

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.