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Finding the Third Proportional to 726 and 931.50

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Solution

The third proportional to 726 and 931.50 is: 1,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    726 : 931.50 = 931.50 : x
  2. Step 2: Convert to fraction form
    726/931.50 = 931.50/x
  3. Step 3: Cross multiply
    726x = 931.50 × 931.50
  4. Step 4: Simplify right side
    726x = 867,692.25
  5. Step 5: Solve for x
    x = 867,692.25/726
  6. Step 6: Final answer
    x = 1,195.17

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.