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Finding the Fourth Proportional to 188,761.96, 260,491.33 and 103,879.02

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Solution

The fourth proportional to 188,761.96, 260,491.33 and 103,879.02 is: 143,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,761.96 : 260,491.33 = 103,879.02 : x
  2. Step 2: Convert to fraction form
    188,761.96/260,491.33 = 103,879.02/x
  3. Step 3: Cross multiply
    188,761.96x = 260,491.33 × 103,879.02
  4. Step 4: Simplify right side
    188,761.96x = 27,059,584,078.90
  5. Step 5: Solve for x
    x = 27,059,584,078.90/188,761.96
  6. Step 6: Final answer
    x = 143,352.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.