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Finding the Fourth Proportional to 60,694.92, 91,090.08 and 42,105.78

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Solution

The fourth proportional to 60,694.92, 91,090.08 and 42,105.78 is: 63,191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,694.92 : 91,090.08 = 42,105.78 : x
  2. Step 2: Convert to fraction form
    60,694.92/91,090.08 = 42,105.78/x
  3. Step 3: Cross multiply
    60,694.92x = 91,090.08 × 42,105.78
  4. Step 4: Simplify right side
    60,694.92x = 3,835,418,868.66
  5. Step 5: Solve for x
    x = 3,835,418,868.66/60,694.92
  6. Step 6: Final answer
    x = 63,191.76

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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.