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Finding the Fourth Proportional to 73,868.80, 110,839.20 and 34,405.60

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Solution

The fourth proportional to 73,868.80, 110,839.20 and 34,405.60 is: 51,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,868.80 : 110,839.20 = 34,405.60 : x
  2. Step 2: Convert to fraction form
    73,868.80/110,839.20 = 34,405.60/x
  3. Step 3: Cross multiply
    73,868.80x = 110,839.20 × 34,405.60
  4. Step 4: Simplify right side
    73,868.80x = 3,813,489,179.52
  5. Step 5: Solve for x
    x = 3,813,489,179.52/73,868.80
  6. Step 6: Final answer
    x = 51,625.17

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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.