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Finding the Fourth Proportional to 18,568.70, 27,891.93 and 15,652.70

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Solution

The fourth proportional to 18,568.70, 27,891.93 and 15,652.70 is: 23,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.70 : 27,891.93 = 15,652.70 : x
  2. Step 2: Convert to fraction form
    18,568.70/27,891.93 = 15,652.70/x
  3. Step 3: Cross multiply
    18,568.70x = 27,891.93 × 15,652.70
  4. Step 4: Simplify right side
    18,568.70x = 436,584,012.71
  5. Step 5: Solve for x
    x = 436,584,012.71/18,568.70
  6. Step 6: Final answer
    x = 23,511.82

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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.