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Finding the Fourth Proportional to 69,709.86, 104,491.67 and 34,122.11

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Solution

The fourth proportional to 69,709.86, 104,491.67 and 34,122.11 is: 51,147.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,709.86 : 104,491.67 = 34,122.11 : x
  2. Step 2: Convert to fraction form
    69,709.86/104,491.67 = 34,122.11/x
  3. Step 3: Cross multiply
    69,709.86x = 104,491.67 × 34,122.11
  4. Step 4: Simplify right side
    69,709.86x = 3,565,475,564.75
  5. Step 5: Solve for x
    x = 3,565,475,564.75/69,709.86
  6. Step 6: Final answer
    x = 51,147.36

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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.