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Finding the Fourth Proportional to 230,880.40, 346,331.40 and 73,121.20

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Solution

The fourth proportional to 230,880.40, 346,331.40 and 73,121.20 is: 109,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,880.40 : 346,331.40 = 73,121.20 : x
  2. Step 2: Convert to fraction form
    230,880.40/346,331.40 = 73,121.20/x
  3. Step 3: Cross multiply
    230,880.40x = 346,331.40 × 73,121.20
  4. Step 4: Simplify right side
    230,880.40x = 25,324,167,565.68
  5. Step 5: Solve for x
    x = 25,324,167,565.68/230,880.40
  6. Step 6: Final answer
    x = 109,685.22

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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.