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Finding the Third Proportional to 432.75 and 908.50

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Solution

The third proportional to 432.75 and 908.50 is: 1,907.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.75 : 908.50 = 908.50 : x
  2. Step 2: Convert to fraction form
    432.75/908.50 = 908.50/x
  3. Step 3: Cross multiply
    432.75x = 908.50 × 908.50
  4. Step 4: Simplify right side
    432.75x = 825,372.25
  5. Step 5: Solve for x
    x = 825,372.25/432.75
  6. Step 6: Final answer
    x = 1,907.27

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.