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Finding the Fourth Proportional to 69,857.16, 104,791.98 and 19,936.32

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Solution

The fourth proportional to 69,857.16, 104,791.98 and 19,936.32 is: 29,906.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,857.16 : 104,791.98 = 19,936.32 : x
  2. Step 2: Convert to fraction form
    69,857.16/104,791.98 = 19,936.32/x
  3. Step 3: Cross multiply
    69,857.16x = 104,791.98 × 19,936.32
  4. Step 4: Simplify right side
    69,857.16x = 2,089,166,446.71
  5. Step 5: Solve for x
    x = 2,089,166,446.71/69,857.16
  6. Step 6: Final answer
    x = 29,906.26

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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.