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Finding the Fourth Proportional to 114,449.72, 171,649.87 and 72,273.44

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Solution

The fourth proportional to 114,449.72, 171,649.87 and 72,273.44 is: 108,394.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,449.72 : 171,649.87 = 72,273.44 : x
  2. Step 2: Convert to fraction form
    114,449.72/171,649.87 = 72,273.44/x
  3. Step 3: Cross multiply
    114,449.72x = 171,649.87 × 72,273.44
  4. Step 4: Simplify right side
    114,449.72x = 12,405,726,828.89
  5. Step 5: Solve for x
    x = 12,405,726,828.89/114,449.72
  6. Step 6: Final answer
    x = 108,394.56

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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.