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Finding the Fourth Proportional to 74,471.27, 111,706.91 and 21,880.76

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Solution

The fourth proportional to 74,471.27, 111,706.91 and 21,880.76 is: 32,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,471.27 : 111,706.91 = 21,880.76 : x
  2. Step 2: Convert to fraction form
    74,471.27/111,706.91 = 21,880.76/x
  3. Step 3: Cross multiply
    74,471.27x = 111,706.91 × 21,880.76
  4. Step 4: Simplify right side
    74,471.27x = 2,444,231,847.11
  5. Step 5: Solve for x
    x = 2,444,231,847.11/74,471.27
  6. Step 6: Final answer
    x = 32,821.14

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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.