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Finding the Fourth Proportional to 127,940.48, 191,670.81 and 107,014.98

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Solution

The fourth proportional to 127,940.48, 191,670.81 and 107,014.98 is: 160,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.48 : 191,670.81 = 107,014.98 : x
  2. Step 2: Convert to fraction form
    127,940.48/191,670.81 = 107,014.98/x
  3. Step 3: Cross multiply
    127,940.48x = 191,670.81 × 107,014.98
  4. Step 4: Simplify right side
    127,940.48x = 20,511,647,898.73
  5. Step 5: Solve for x
    x = 20,511,647,898.73/127,940.48
  6. Step 6: Final answer
    x = 160,321.80

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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.