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Finding the Fourth Proportional to 18,493.50, 25,521.03 and 11,881.02

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Solution

The fourth proportional to 18,493.50, 25,521.03 and 11,881.02 is: 16,395.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.50 : 25,521.03 = 11,881.02 : x
  2. Step 2: Convert to fraction form
    18,493.50/25,521.03 = 11,881.02/x
  3. Step 3: Cross multiply
    18,493.50x = 25,521.03 × 11,881.02
  4. Step 4: Simplify right side
    18,493.50x = 303,215,867.85
  5. Step 5: Solve for x
    x = 303,215,867.85/18,493.50
  6. Step 6: Final answer
    x = 16,395.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.