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Finding the Third Proportional to 838.50 and 1,296

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Solution

The third proportional to 838.50 and 1,296 is: 2,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    838.50 : 1,296 = 1,296 : x
  2. Step 2: Convert to fraction form
    838.50/1,296 = 1,296/x
  3. Step 3: Cross multiply
    838.50x = 1,296 × 1,296
  4. Step 4: Simplify right side
    838.50x = 1,679,616
  5. Step 5: Solve for x
    x = 1,679,616/838.50
  6. Step 6: Final answer
    x = 2,003.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.