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Finding the Fourth Proportional to 217,127.53, 325,722.21 and 67,380.76

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Solution

The fourth proportional to 217,127.53, 325,722.21 and 67,380.76 is: 101,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,127.53 : 325,722.21 = 67,380.76 : x
  2. Step 2: Convert to fraction form
    217,127.53/325,722.21 = 67,380.76/x
  3. Step 3: Cross multiply
    217,127.53x = 325,722.21 × 67,380.76
  4. Step 4: Simplify right side
    217,127.53x = 21,947,410,058.68
  5. Step 5: Solve for x
    x = 21,947,410,058.68/217,127.53
  6. Step 6: Final answer
    x = 101,080.73

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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.