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Finding the Third Proportional to 756 and 1,133.16

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Solution

The third proportional to 756 and 1,133.16 is: 1,698.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    756 : 1,133.16 = 1,133.16 : x
  2. Step 2: Convert to fraction form
    756/1,133.16 = 1,133.16/x
  3. Step 3: Cross multiply
    756x = 1,133.16 × 1,133.16
  4. Step 4: Simplify right side
    756x = 1,284,043.09
  5. Step 5: Solve for x
    x = 1,284,043.09/756
  6. Step 6: Final answer
    x = 1,698.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.