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Finding the Fourth Proportional to 69,953.10, 104,891.18 and 47,791.50

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Solution

The fourth proportional to 69,953.10, 104,891.18 and 47,791.50 is: 71,660.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,953.10 : 104,891.18 = 47,791.50 : x
  2. Step 2: Convert to fraction form
    69,953.10/104,891.18 = 47,791.50/x
  3. Step 3: Cross multiply
    69,953.10x = 104,891.18 × 47,791.50
  4. Step 4: Simplify right side
    69,953.10x = 5,012,906,590.01
  5. Step 5: Solve for x
    x = 5,012,906,590.01/69,953.10
  6. Step 6: Final answer
    x = 71,660.96

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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.