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Finding the Fourth Proportional to 108,422.75, 162,649.25 and 49,273.31

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Solution

The fourth proportional to 108,422.75, 162,649.25 and 49,273.31 is: 73,916.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,422.75 : 162,649.25 = 49,273.31 : x
  2. Step 2: Convert to fraction form
    108,422.75/162,649.25 = 49,273.31/x
  3. Step 3: Cross multiply
    108,422.75x = 162,649.25 × 49,273.31
  4. Step 4: Simplify right side
    108,422.75x = 8,014,265,856.90
  5. Step 5: Solve for x
    x = 8,014,265,856.90/108,422.75
  6. Step 6: Final answer
    x = 73,916.83

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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.