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Finding the Fourth Proportional to 188,195.96, 282,079.16 and 75,804.20

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Solution

The fourth proportional to 188,195.96, 282,079.16 and 75,804.20 is: 113,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,195.96 : 282,079.16 = 75,804.20 : x
  2. Step 2: Convert to fraction form
    188,195.96/282,079.16 = 75,804.20/x
  3. Step 3: Cross multiply
    188,195.96x = 282,079.16 × 75,804.20
  4. Step 4: Simplify right side
    188,195.96x = 21,382,783,839.59
  5. Step 5: Solve for x
    x = 21,382,783,839.59/188,195.96
  6. Step 6: Final answer
    x = 113,619.78

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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.