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Finding the Fourth Proportional to 11,151.72, 15,387.78 and 6,183.72

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Solution

The fourth proportional to 11,151.72, 15,387.78 and 6,183.72 is: 8,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.72 : 15,387.78 = 6,183.72 : x
  2. Step 2: Convert to fraction form
    11,151.72/15,387.78 = 6,183.72/x
  3. Step 3: Cross multiply
    11,151.72x = 15,387.78 × 6,183.72
  4. Step 4: Simplify right side
    11,151.72x = 95,153,722.94
  5. Step 5: Solve for x
    x = 95,153,722.94/11,151.72
  6. Step 6: Final answer
    x = 8,532.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.