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Finding the Third Proportional to 238.50 and 364.88

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Solution

The third proportional to 238.50 and 364.88 is: 558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.50 : 364.88 = 364.88 : x
  2. Step 2: Convert to fraction form
    238.50/364.88 = 364.88/x
  3. Step 3: Cross multiply
    238.50x = 364.88 × 364.88
  4. Step 4: Simplify right side
    238.50x = 133,133.77
  5. Step 5: Solve for x
    x = 133,133.77/238.50
  6. Step 6: Final answer
    x = 558.21

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.