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Finding the Fourth Proportional to 18,101.26, 24,970.84 and 11,015.38

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Solution

The fourth proportional to 18,101.26, 24,970.84 and 11,015.38 is: 15,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.26 : 24,970.84 = 11,015.38 : x
  2. Step 2: Convert to fraction form
    18,101.26/24,970.84 = 11,015.38/x
  3. Step 3: Cross multiply
    18,101.26x = 24,970.84 × 11,015.38
  4. Step 4: Simplify right side
    18,101.26x = 275,063,291.52
  5. Step 5: Solve for x
    x = 275,063,291.52/18,101.26
  6. Step 6: Final answer
    x = 15,195.81

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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.