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Finding the Third Proportional to 533.25 and 855

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Solution

The third proportional to 533.25 and 855 is: 1,370.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.25 : 855 = 855 : x
  2. Step 2: Convert to fraction form
    533.25/855 = 855/x
  3. Step 3: Cross multiply
    533.25x = 855 × 855
  4. Step 4: Simplify right side
    533.25x = 731,025
  5. Step 5: Solve for x
    x = 731,025/533.25
  6. Step 6: Final answer
    x = 1,370.89

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.