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Finding the Fourth Proportional to 74,311.56, 111,503.79 and 34,871.88

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Solution

The fourth proportional to 74,311.56, 111,503.79 and 34,871.88 is: 52,324.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,311.56 : 111,503.79 = 34,871.88 : x
  2. Step 2: Convert to fraction form
    74,311.56/111,503.79 = 34,871.88/x
  3. Step 3: Cross multiply
    74,311.56x = 111,503.79 × 34,871.88
  4. Step 4: Simplify right side
    74,311.56x = 3,888,346,784.43
  5. Step 5: Solve for x
    x = 3,888,346,784.43/74,311.56
  6. Step 6: Final answer
    x = 52,324.92

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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.