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Finding the Fourth Proportional to 29,787.80, 41,126.41 and 18,469.32

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Solution

The fourth proportional to 29,787.80, 41,126.41 and 18,469.32 is: 25,499.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,787.80 : 41,126.41 = 18,469.32 : x
  2. Step 2: Convert to fraction form
    29,787.80/41,126.41 = 18,469.32/x
  3. Step 3: Cross multiply
    29,787.80x = 41,126.41 × 18,469.32
  4. Step 4: Simplify right side
    29,787.80x = 759,576,826.74
  5. Step 5: Solve for x
    x = 759,576,826.74/29,787.80
  6. Step 6: Final answer
    x = 25,499.59

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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.