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Finding the Fourth Proportional to 137,732.80, 206,599.20 and 131,900.80

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Solution

The fourth proportional to 137,732.80, 206,599.20 and 131,900.80 is: 197,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,732.80 : 206,599.20 = 131,900.80 : x
  2. Step 2: Convert to fraction form
    137,732.80/206,599.20 = 131,900.80/x
  3. Step 3: Cross multiply
    137,732.80x = 206,599.20 × 131,900.80
  4. Step 4: Simplify right side
    137,732.80x = 27,250,599,759.36
  5. Step 5: Solve for x
    x = 27,250,599,759.36/137,732.80
  6. Step 6: Final answer
    x = 197,851.20

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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.