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Finding the Fourth Proportional to 11,712.52, 17,553.66 and 4,778.92

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Solution

The fourth proportional to 11,712.52, 17,553.66 and 4,778.92 is: 7,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.52 : 17,553.66 = 4,778.92 : x
  2. Step 2: Convert to fraction form
    11,712.52/17,553.66 = 4,778.92/x
  3. Step 3: Cross multiply
    11,712.52x = 17,553.66 × 4,778.92
  4. Step 4: Simplify right side
    11,712.52x = 83,887,536.85
  5. Step 5: Solve for x
    x = 83,887,536.85/11,712.52
  6. Step 6: Final answer
    x = 7,162.21

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