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Finding the Fourth Proportional to 69,235.72, 103,809.21 and 29,243.86

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Solution

The fourth proportional to 69,235.72, 103,809.21 and 29,243.86 is: 43,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,235.72 : 103,809.21 = 29,243.86 : x
  2. Step 2: Convert to fraction form
    69,235.72/103,809.21 = 29,243.86/x
  3. Step 3: Cross multiply
    69,235.72x = 103,809.21 × 29,243.86
  4. Step 4: Simplify right side
    69,235.72x = 3,035,782,003.95
  5. Step 5: Solve for x
    x = 3,035,782,003.95/69,235.72
  6. Step 6: Final answer
    x = 43,847.05

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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.