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Finding the Fourth Proportional to 263,995.11, 395,957.61 and 74,470.77

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Solution

The fourth proportional to 263,995.11, 395,957.61 and 74,470.77 is: 111,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,995.11 : 395,957.61 = 74,470.77 : x
  2. Step 2: Convert to fraction form
    263,995.11/395,957.61 = 74,470.77/x
  3. Step 3: Cross multiply
    263,995.11x = 395,957.61 × 74,470.77
  4. Step 4: Simplify right side
    263,995.11x = 29,487,268,104.06
  5. Step 5: Solve for x
    x = 29,487,268,104.06/263,995.11
  6. Step 6: Final answer
    x = 111,696.27

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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.