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Finding the Fourth Proportional to 75,779.56, 104,581.75 and 41,791.15

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Solution

The fourth proportional to 75,779.56, 104,581.75 and 41,791.15 is: 57,675.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,779.56 : 104,581.75 = 41,791.15 : x
  2. Step 2: Convert to fraction form
    75,779.56/104,581.75 = 41,791.15/x
  3. Step 3: Cross multiply
    75,779.56x = 104,581.75 × 41,791.15
  4. Step 4: Simplify right side
    75,779.56x = 4,370,591,078.60
  5. Step 5: Solve for x
    x = 4,370,591,078.60/75,779.56
  6. Step 6: Final answer
    x = 57,675.07

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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.