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Finding the Third Proportional to 1,197 and 2,431.50

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Solution

The third proportional to 1,197 and 2,431.50 is: 4,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197 : 2,431.50 = 2,431.50 : x
  2. Step 2: Convert to fraction form
    1,197/2,431.50 = 2,431.50/x
  3. Step 3: Cross multiply
    1,197x = 2,431.50 × 2,431.50
  4. Step 4: Simplify right side
    1,197x = 5,912,192.25
  5. Step 5: Solve for x
    x = 5,912,192.25/1,197
  6. Step 6: Final answer
    x = 4,939.17

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.