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Finding the Third Proportional to 1,403.79 and 2,201.13

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Solution

The third proportional to 1,403.79 and 2,201.13 is: 3,451.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.79 : 2,201.13 = 2,201.13 : x
  2. Step 2: Convert to fraction form
    1,403.79/2,201.13 = 2,201.13/x
  3. Step 3: Cross multiply
    1,403.79x = 2,201.13 × 2,201.13
  4. Step 4: Simplify right side
    1,403.79x = 4,844,985.66
  5. Step 5: Solve for x
    x = 4,844,985.66/1,403.79
  6. Step 6: Final answer
    x = 3,451.36

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.