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Finding the Fourth Proportional to 316,791.67, 475,258.42 and 106,423.87

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Solution

The fourth proportional to 316,791.67, 475,258.42 and 106,423.87 is: 159,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,791.67 : 475,258.42 = 106,423.87 : x
  2. Step 2: Convert to fraction form
    316,791.67/475,258.42 = 106,423.87/x
  3. Step 3: Cross multiply
    316,791.67x = 475,258.42 × 106,423.87
  4. Step 4: Simplify right side
    316,791.67x = 50,578,840,306.49
  5. Step 5: Solve for x
    x = 50,578,840,306.49/316,791.67
  6. Step 6: Final answer
    x = 159,659.63

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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.