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Finding the Fourth Proportional to 18,194.63, 25,119.52 and 11,917.94

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Solution

The fourth proportional to 18,194.63, 25,119.52 and 11,917.94 is: 16,453.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,194.63 : 25,119.52 = 11,917.94 : x
  2. Step 2: Convert to fraction form
    18,194.63/25,119.52 = 11,917.94/x
  3. Step 3: Cross multiply
    18,194.63x = 25,119.52 × 11,917.94
  4. Step 4: Simplify right side
    18,194.63x = 299,372,776.80
  5. Step 5: Solve for x
    x = 299,372,776.80/18,194.63
  6. Step 6: Final answer
    x = 16,453.91

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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.