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Finding the Fourth Proportional to 18,725.76, 28,079.24 and 6,241.37

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Solution

The fourth proportional to 18,725.76, 28,079.24 and 6,241.37 is: 9,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.76 : 28,079.24 = 6,241.37 : x
  2. Step 2: Convert to fraction form
    18,725.76/28,079.24 = 6,241.37/x
  3. Step 3: Cross multiply
    18,725.76x = 28,079.24 × 6,241.37
  4. Step 4: Simplify right side
    18,725.76x = 175,252,754.56
  5. Step 5: Solve for x
    x = 175,252,754.56/18,725.76
  6. Step 6: Final answer
    x = 9,358.91

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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.