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Finding the Fourth Proportional to 11,811.13, 17,716.69 and 3,603.13

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Solution

The fourth proportional to 11,811.13, 17,716.69 and 3,603.13 is: 5,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.13 : 17,716.69 = 3,603.13 : x
  2. Step 2: Convert to fraction form
    11,811.13/17,716.69 = 3,603.13/x
  3. Step 3: Cross multiply
    11,811.13x = 17,716.69 × 3,603.13
  4. Step 4: Simplify right side
    11,811.13x = 63,835,537.24
  5. Step 5: Solve for x
    x = 63,835,537.24/11,811.13
  6. Step 6: Final answer
    x = 5,404.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.