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Finding the Fourth Proportional to 16,906.99, 25,353.99 and 5,811.61

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Solution

The fourth proportional to 16,906.99, 25,353.99 and 5,811.61 is: 8,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,906.99 : 25,353.99 = 5,811.61 : x
  2. Step 2: Convert to fraction form
    16,906.99/25,353.99 = 5,811.61/x
  3. Step 3: Cross multiply
    16,906.99x = 25,353.99 × 5,811.61
  4. Step 4: Simplify right side
    16,906.99x = 147,347,501.82
  5. Step 5: Solve for x
    x = 147,347,501.82/16,906.99
  6. Step 6: Final answer
    x = 8,715.18

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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.