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Finding the Fourth Proportional to 18,591.96, 25,645.63 and 11,033.31

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Solution

The fourth proportional to 18,591.96, 25,645.63 and 11,033.31 is: 15,219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.96 : 25,645.63 = 11,033.31 : x
  2. Step 2: Convert to fraction form
    18,591.96/25,645.63 = 11,033.31/x
  3. Step 3: Cross multiply
    18,591.96x = 25,645.63 × 11,033.31
  4. Step 4: Simplify right side
    18,591.96x = 282,956,185.94
  5. Step 5: Solve for x
    x = 282,956,185.94/18,591.96
  6. Step 6: Final answer
    x = 15,219.28

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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.