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Finding the Third Proportional to 938 and 1,485

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Solution

The third proportional to 938 and 1,485 is: 2,350.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    938 : 1,485 = 1,485 : x
  2. Step 2: Convert to fraction form
    938/1,485 = 1,485/x
  3. Step 3: Cross multiply
    938x = 1,485 × 1,485
  4. Step 4: Simplify right side
    938x = 2,205,225
  5. Step 5: Solve for x
    x = 2,205,225/938
  6. Step 6: Final answer
    x = 2,350.99

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.