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Finding the Fourth Proportional to 73,890.66, 101,969.22 and 42,059.56

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Solution

The fourth proportional to 73,890.66, 101,969.22 and 42,059.56 is: 58,042.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,890.66 : 101,969.22 = 42,059.56 : x
  2. Step 2: Convert to fraction form
    73,890.66/101,969.22 = 42,059.56/x
  3. Step 3: Cross multiply
    73,890.66x = 101,969.22 × 42,059.56
  4. Step 4: Simplify right side
    73,890.66x = 4,288,780,429.54
  5. Step 5: Solve for x
    x = 4,288,780,429.54/73,890.66
  6. Step 6: Final answer
    x = 58,042.26

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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.