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Finding the Third Proportional to 939.44 and 1,335.31

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Solution

The third proportional to 939.44 and 1,335.31 is: 1,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.44 : 1,335.31 = 1,335.31 : x
  2. Step 2: Convert to fraction form
    939.44/1,335.31 = 1,335.31/x
  3. Step 3: Cross multiply
    939.44x = 1,335.31 × 1,335.31
  4. Step 4: Simplify right side
    939.44x = 1,783,059.47
  5. Step 5: Solve for x
    x = 1,783,059.47/939.44
  6. Step 6: Final answer
    x = 1,898.01

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.