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Finding the Fourth Proportional to 68,775.60, 103,163.40 and 27,222.60

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Solution

The fourth proportional to 68,775.60, 103,163.40 and 27,222.60 is: 40,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,775.60 : 103,163.40 = 27,222.60 : x
  2. Step 2: Convert to fraction form
    68,775.60/103,163.40 = 27,222.60/x
  3. Step 3: Cross multiply
    68,775.60x = 103,163.40 × 27,222.60
  4. Step 4: Simplify right side
    68,775.60x = 2,808,375,972.84
  5. Step 5: Solve for x
    x = 2,808,375,972.84/68,775.60
  6. Step 6: Final answer
    x = 40,833.90

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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.