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Finding the Fourth Proportional to 206,606.56, 285,119.17 and 115,960.71

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Solution

The fourth proportional to 206,606.56, 285,119.17 and 115,960.71 is: 160,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,606.56 : 285,119.17 = 115,960.71 : x
  2. Step 2: Convert to fraction form
    206,606.56/285,119.17 = 115,960.71/x
  3. Step 3: Cross multiply
    206,606.56x = 285,119.17 × 115,960.71
  4. Step 4: Simplify right side
    206,606.56x = 33,062,621,097.91
  5. Step 5: Solve for x
    x = 33,062,621,097.91/206,606.56
  6. Step 6: Final answer
    x = 160,026.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.