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Finding the Fourth Proportional to 8,576.70, 12,866.67 and 4,413.30

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Solution

The fourth proportional to 8,576.70, 12,866.67 and 4,413.30 is: 6,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.70 : 12,866.67 = 4,413.30 : x
  2. Step 2: Convert to fraction form
    8,576.70/12,866.67 = 4,413.30/x
  3. Step 3: Cross multiply
    8,576.70x = 12,866.67 × 4,413.30
  4. Step 4: Simplify right side
    8,576.70x = 56,784,474.71
  5. Step 5: Solve for x
    x = 56,784,474.71/8,576.70
  6. Step 6: Final answer
    x = 6,620.78

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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.