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Finding the Fourth Proportional to 18,434.20, 27,661.04 and 11,053.48

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Solution

The fourth proportional to 18,434.20, 27,661.04 and 11,053.48 is: 16,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,434.20 : 27,661.04 = 11,053.48 : x
  2. Step 2: Convert to fraction form
    18,434.20/27,661.04 = 11,053.48/x
  3. Step 3: Cross multiply
    18,434.20x = 27,661.04 × 11,053.48
  4. Step 4: Simplify right side
    18,434.20x = 305,750,752.42
  5. Step 5: Solve for x
    x = 305,750,752.42/18,434.20
  6. Step 6: Final answer
    x = 16,586.06

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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.