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Finding the Third Proportional to 535.25 and 851.75

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Solution

The third proportional to 535.25 and 851.75 is: 1,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.25 : 851.75 = 851.75 : x
  2. Step 2: Convert to fraction form
    535.25/851.75 = 851.75/x
  3. Step 3: Cross multiply
    535.25x = 851.75 × 851.75
  4. Step 4: Simplify right side
    535.25x = 725,478.06
  5. Step 5: Solve for x
    x = 725,478.06/535.25
  6. Step 6: Final answer
    x = 1,355.40

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.