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Finding the Fourth Proportional to 127,951.37, 191,884.22 and 42,542.54

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Solution

The fourth proportional to 127,951.37, 191,884.22 and 42,542.54 is: 63,799.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,951.37 : 191,884.22 = 42,542.54 : x
  2. Step 2: Convert to fraction form
    127,951.37/191,884.22 = 42,542.54/x
  3. Step 3: Cross multiply
    127,951.37x = 191,884.22 × 42,542.54
  4. Step 4: Simplify right side
    127,951.37x = 8,163,242,104.72
  5. Step 5: Solve for x
    x = 8,163,242,104.72/127,951.37
  6. Step 6: Final answer
    x = 63,799.57

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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.