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Finding the Fourth Proportional to 468,912.38, 703,485.20 and 136,488.38

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Solution

The fourth proportional to 468,912.38, 703,485.20 and 136,488.38 is: 204,766.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,912.38 : 703,485.20 = 136,488.38 : x
  2. Step 2: Convert to fraction form
    468,912.38/703,485.20 = 136,488.38/x
  3. Step 3: Cross multiply
    468,912.38x = 703,485.20 × 136,488.38
  4. Step 4: Simplify right side
    468,912.38x = 96,017,552,125.77
  5. Step 5: Solve for x
    x = 96,017,552,125.77/468,912.38
  6. Step 6: Final answer
    x = 204,766.51

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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.