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Finding the Third Proportional to 394.88 and 947.25

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Solution

The third proportional to 394.88 and 947.25 is: 2,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.88 : 947.25 = 947.25 : x
  2. Step 2: Convert to fraction form
    394.88/947.25 = 947.25/x
  3. Step 3: Cross multiply
    394.88x = 947.25 × 947.25
  4. Step 4: Simplify right side
    394.88x = 897,282.56
  5. Step 5: Solve for x
    x = 897,282.56/394.88
  6. Step 6: Final answer
    x = 2,272.32

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.