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Finding the Fourth Proportional to 236,863.71, 355,351.33 and 76,939.14

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Solution

The fourth proportional to 236,863.71, 355,351.33 and 76,939.14 is: 115,426.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,863.71 : 355,351.33 = 76,939.14 : x
  2. Step 2: Convert to fraction form
    236,863.71/355,351.33 = 76,939.14/x
  3. Step 3: Cross multiply
    236,863.71x = 355,351.33 × 76,939.14
  4. Step 4: Simplify right side
    236,863.71x = 27,340,427,156.80
  5. Step 5: Solve for x
    x = 27,340,427,156.80/236,863.71
  6. Step 6: Final answer
    x = 115,426.83

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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.