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Finding the Fourth Proportional to 18,375.66, 27,398.86 and 18,043.97

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Solution

The fourth proportional to 18,375.66, 27,398.86 and 18,043.97 is: 26,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.66 : 27,398.86 = 18,043.97 : x
  2. Step 2: Convert to fraction form
    18,375.66/27,398.86 = 18,043.97/x
  3. Step 3: Cross multiply
    18,375.66x = 27,398.86 × 18,043.97
  4. Step 4: Simplify right side
    18,375.66x = 494,384,025.77
  5. Step 5: Solve for x
    x = 494,384,025.77/18,375.66
  6. Step 6: Final answer
    x = 26,904.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.