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Finding the Third Proportional to 896.81 and 1,398.38

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Solution

The third proportional to 896.81 and 1,398.38 is: 2,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.81 : 1,398.38 = 1,398.38 : x
  2. Step 2: Convert to fraction form
    896.81/1,398.38 = 1,398.38/x
  3. Step 3: Cross multiply
    896.81x = 1,398.38 × 1,398.38
  4. Step 4: Simplify right side
    896.81x = 1,955,452.64
  5. Step 5: Solve for x
    x = 1,955,452.64/896.81
  6. Step 6: Final answer
    x = 2,180.45

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.