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Finding the Fourth Proportional to 31,626.67, 47,439.98 and 8,253.11

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Solution

The fourth proportional to 31,626.67, 47,439.98 and 8,253.11 is: 12,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626.67 : 47,439.98 = 8,253.11 : x
  2. Step 2: Convert to fraction form
    31,626.67/47,439.98 = 8,253.11/x
  3. Step 3: Cross multiply
    31,626.67x = 47,439.98 × 8,253.11
  4. Step 4: Simplify right side
    31,626.67x = 391,527,136.14
  5. Step 5: Solve for x
    x = 391,527,136.14/31,626.67
  6. Step 6: Final answer
    x = 12,379.65

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1.5x scale

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.