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Finding the Third Proportional to 1,428.38 and 2,200.13

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Solution

The third proportional to 1,428.38 and 2,200.13 is: 3,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.38 : 2,200.13 = 2,200.13 : x
  2. Step 2: Convert to fraction form
    1,428.38/2,200.13 = 2,200.13/x
  3. Step 3: Cross multiply
    1,428.38x = 2,200.13 × 2,200.13
  4. Step 4: Simplify right side
    1,428.38x = 4,840,550.02
  5. Step 5: Solve for x
    x = 4,840,550.02/1,428.38
  6. Step 6: Final answer
    x = 3,388.85

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.