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Finding the Fourth Proportional to 159,694.20, 239,541.30 and 131,700.60

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Solution

The fourth proportional to 159,694.20, 239,541.30 and 131,700.60 is: 197,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,694.20 : 239,541.30 = 131,700.60 : x
  2. Step 2: Convert to fraction form
    159,694.20/239,541.30 = 131,700.60/x
  3. Step 3: Cross multiply
    159,694.20x = 239,541.30 × 131,700.60
  4. Step 4: Simplify right side
    159,694.20x = 31,547,732,934.78
  5. Step 5: Solve for x
    x = 31,547,732,934.78/159,694.20
  6. Step 6: Final answer
    x = 197,550.90

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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.