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Finding the Fourth Proportional to 18,151.92, 25,033.01 and 11,771.87

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Solution

The fourth proportional to 18,151.92, 25,033.01 and 11,771.87 is: 16,234.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151.92 : 25,033.01 = 11,771.87 : x
  2. Step 2: Convert to fraction form
    18,151.92/25,033.01 = 11,771.87/x
  3. Step 3: Cross multiply
    18,151.92x = 25,033.01 × 11,771.87
  4. Step 4: Simplify right side
    18,151.92x = 294,685,155.40
  5. Step 5: Solve for x
    x = 294,685,155.40/18,151.92
  6. Step 6: Final answer
    x = 16,234.38

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1.5x scale

Why These Related Problems?

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