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Finding the Fourth Proportional to 69,530.88, 104,261.81 and 22,139.80

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Solution

The fourth proportional to 69,530.88, 104,261.81 and 22,139.80 is: 33,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,530.88 : 104,261.81 = 22,139.80 : x
  2. Step 2: Convert to fraction form
    69,530.88/104,261.81 = 22,139.80/x
  3. Step 3: Cross multiply
    69,530.88x = 104,261.81 × 22,139.80
  4. Step 4: Simplify right side
    69,530.88x = 2,308,334,989.03
  5. Step 5: Solve for x
    x = 2,308,334,989.03/69,530.88
  6. Step 6: Final answer
    x = 33,198.70

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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.