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Finding the Fourth Proportional to 15,951.87, 23,920.87 and 4,855.96

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Solution

The fourth proportional to 15,951.87, 23,920.87 and 4,855.96 is: 7,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.87 : 23,920.87 = 4,855.96 : x
  2. Step 2: Convert to fraction form
    15,951.87/23,920.87 = 4,855.96/x
  3. Step 3: Cross multiply
    15,951.87x = 23,920.87 × 4,855.96
  4. Step 4: Simplify right side
    15,951.87x = 116,158,868.71
  5. Step 5: Solve for x
    x = 116,158,868.71/15,951.87
  6. Step 6: Final answer
    x = 7,281.83

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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.