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Finding the Fourth Proportional to 57,857.90, 86,785.93 and 18,414.44

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Solution

The fourth proportional to 57,857.90, 86,785.93 and 18,414.44 is: 27,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,857.90 : 86,785.93 = 18,414.44 : x
  2. Step 2: Convert to fraction form
    57,857.90/86,785.93 = 18,414.44/x
  3. Step 3: Cross multiply
    57,857.90x = 86,785.93 × 18,414.44
  4. Step 4: Simplify right side
    57,857.90x = 1,598,114,215.36
  5. Step 5: Solve for x
    x = 1,598,114,215.36/57,857.90
  6. Step 6: Final answer
    x = 27,621.37

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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.