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Finding the Fourth Proportional to 69,418.63, 104,131.82 and 19,494.83

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Solution

The fourth proportional to 69,418.63, 104,131.82 and 19,494.83 is: 29,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,418.63 : 104,131.82 = 19,494.83 : x
  2. Step 2: Convert to fraction form
    69,418.63/104,131.82 = 19,494.83/x
  3. Step 3: Cross multiply
    69,418.63x = 104,131.82 × 19,494.83
  4. Step 4: Simplify right side
    69,418.63x = 2,030,031,838.11
  5. Step 5: Solve for x
    x = 2,030,031,838.11/69,418.63
  6. Step 6: Final answer
    x = 29,243.33

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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.