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Finding the Fourth Proportional to 69,263.74, 103,912.89 and 27,709.66

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Solution

The fourth proportional to 69,263.74, 103,912.89 and 27,709.66 is: 41,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,263.74 : 103,912.89 = 27,709.66 : x
  2. Step 2: Convert to fraction form
    69,263.74/103,912.89 = 27,709.66/x
  3. Step 3: Cross multiply
    69,263.74x = 103,912.89 × 27,709.66
  4. Step 4: Simplify right side
    69,263.74x = 2,879,390,851.52
  5. Step 5: Solve for x
    x = 2,879,390,851.52/69,263.74
  6. Step 6: Final answer
    x = 41,571.40

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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.