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Finding the Fourth Proportional to 34,252.80, 51,379.20 and 12,091.20

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Solution

The fourth proportional to 34,252.80, 51,379.20 and 12,091.20 is: 18,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,252.80 : 51,379.20 = 12,091.20 : x
  2. Step 2: Convert to fraction form
    34,252.80/51,379.20 = 12,091.20/x
  3. Step 3: Cross multiply
    34,252.80x = 51,379.20 × 12,091.20
  4. Step 4: Simplify right side
    34,252.80x = 621,236,183.04
  5. Step 5: Solve for x
    x = 621,236,183.04/34,252.80
  6. Step 6: Final answer
    x = 18,136.80

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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.