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Finding the Fourth Proportional to 18,379.72, 27,569.60 and 6,693.04

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Solution

The fourth proportional to 18,379.72, 27,569.60 and 6,693.04 is: 10,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.72 : 27,569.60 = 6,693.04 : x
  2. Step 2: Convert to fraction form
    18,379.72/27,569.60 = 6,693.04/x
  3. Step 3: Cross multiply
    18,379.72x = 27,569.60 × 6,693.04
  4. Step 4: Simplify right side
    18,379.72x = 184,524,435.58
  5. Step 5: Solve for x
    x = 184,524,435.58/18,379.72
  6. Step 6: Final answer
    x = 10,039.57

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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.