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Finding the Fourth Proportional to 18,274.26, 27,422.32 and 16,787.10

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Solution

The fourth proportional to 18,274.26, 27,422.32 and 16,787.10 is: 25,190.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.26 : 27,422.32 = 16,787.10 : x
  2. Step 2: Convert to fraction form
    18,274.26/27,422.32 = 16,787.10/x
  3. Step 3: Cross multiply
    18,274.26x = 27,422.32 × 16,787.10
  4. Step 4: Simplify right side
    18,274.26x = 460,341,213.38
  5. Step 5: Solve for x
    x = 460,341,213.38/18,274.26
  6. Step 6: Final answer
    x = 25,190.69

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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.