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Finding the Fourth Proportional to 69,168.88, 103,773.84 and 22,420.72

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Solution

The fourth proportional to 69,168.88, 103,773.84 and 22,420.72 is: 33,637.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,168.88 : 103,773.84 = 22,420.72 : x
  2. Step 2: Convert to fraction form
    69,168.88/103,773.84 = 22,420.72/x
  3. Step 3: Cross multiply
    69,168.88x = 103,773.84 × 22,420.72
  4. Step 4: Simplify right side
    69,168.88x = 2,326,684,209.96
  5. Step 5: Solve for x
    x = 2,326,684,209.96/69,168.88
  6. Step 6: Final answer
    x = 33,637.73

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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.