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Finding the Third Proportional to 189.25 and 366.50

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Solution

The third proportional to 189.25 and 366.50 is: 709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.25 : 366.50 = 366.50 : x
  2. Step 2: Convert to fraction form
    189.25/366.50 = 366.50/x
  3. Step 3: Cross multiply
    189.25x = 366.50 × 366.50
  4. Step 4: Simplify right side
    189.25x = 134,322.25
  5. Step 5: Solve for x
    x = 134,322.25/189.25
  6. Step 6: Final answer
    x = 709.76

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Why These Related Problems?

These problems maintain the same ratio (1.94) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.