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Finding the Third Proportional to 267.25 and 392.63

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Solution

The third proportional to 267.25 and 392.63 is: 576.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.25 : 392.63 = 392.63 : x
  2. Step 2: Convert to fraction form
    267.25/392.63 = 392.63/x
  3. Step 3: Cross multiply
    267.25x = 392.63 × 392.63
  4. Step 4: Simplify right side
    267.25x = 154,154.39
  5. Step 5: Solve for x
    x = 154,154.39/267.25
  6. Step 6: Final answer
    x = 576.82

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.