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Finding the Third Proportional to 725.25 and 1,158

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Solution

The third proportional to 725.25 and 1,158 is: 1,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.25 : 1,158 = 1,158 : x
  2. Step 2: Convert to fraction form
    725.25/1,158 = 1,158/x
  3. Step 3: Cross multiply
    725.25x = 1,158 × 1,158
  4. Step 4: Simplify right side
    725.25x = 1,340,964
  5. Step 5: Solve for x
    x = 1,340,964/725.25
  6. Step 6: Final answer
    x = 1,848.97

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.