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Finding the Fourth Proportional to 74,817.55, 112,163.16 and 34,815.85

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Solution

The fourth proportional to 74,817.55, 112,163.16 and 34,815.85 is: 52,194.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,817.55 : 112,163.16 = 34,815.85 : x
  2. Step 2: Convert to fraction form
    74,817.55/112,163.16 = 34,815.85/x
  3. Step 3: Cross multiply
    74,817.55x = 112,163.16 × 34,815.85
  4. Step 4: Simplify right side
    74,817.55x = 3,905,055,473.68
  5. Step 5: Solve for x
    x = 3,905,055,473.68/74,817.55
  6. Step 6: Final answer
    x = 52,194.38

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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.