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Finding the Third Proportional to 414.75 and 751.50

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Solution

The third proportional to 414.75 and 751.50 is: 1,361.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.75 : 751.50 = 751.50 : x
  2. Step 2: Convert to fraction form
    414.75/751.50 = 751.50/x
  3. Step 3: Cross multiply
    414.75x = 751.50 × 751.50
  4. Step 4: Simplify right side
    414.75x = 564,752.25
  5. Step 5: Solve for x
    x = 564,752.25/414.75
  6. Step 6: Final answer
    x = 1,361.67

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.