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Finding the Third Proportional to 672.75 and 983.25

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Solution

The third proportional to 672.75 and 983.25 is: 1,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.75 : 983.25 = 983.25 : x
  2. Step 2: Convert to fraction form
    672.75/983.25 = 983.25/x
  3. Step 3: Cross multiply
    672.75x = 983.25 × 983.25
  4. Step 4: Simplify right side
    672.75x = 966,780.56
  5. Step 5: Solve for x
    x = 966,780.56/672.75
  6. Step 6: Final answer
    x = 1,437.06

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.