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Finding the Fourth Proportional to 11,248.04, 16,872.30 and 3,861

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Solution

The fourth proportional to 11,248.04, 16,872.30 and 3,861 is: 5,791.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,248.04 : 16,872.30 = 3,861 : x
  2. Step 2: Convert to fraction form
    11,248.04/16,872.30 = 3,861/x
  3. Step 3: Cross multiply
    11,248.04x = 16,872.30 × 3,861
  4. Step 4: Simplify right side
    11,248.04x = 65,143,950.30
  5. Step 5: Solve for x
    x = 65,143,950.30/11,248.04
  6. Step 6: Final answer
    x = 5,791.58

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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.