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Finding the Fourth Proportional to 231,546.80, 347,233.80 and 91,276.40

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Solution

The fourth proportional to 231,546.80, 347,233.80 and 91,276.40 is: 136,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,546.80 : 347,233.80 = 91,276.40 : x
  2. Step 2: Convert to fraction form
    231,546.80/347,233.80 = 91,276.40/x
  3. Step 3: Cross multiply
    231,546.80x = 347,233.80 × 91,276.40
  4. Step 4: Simplify right side
    231,546.80x = 31,694,251,222.32
  5. Step 5: Solve for x
    x = 31,694,251,222.32/231,546.80
  6. Step 6: Final answer
    x = 136,880.54

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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.