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Finding the Fourth Proportional to 100,940.99, 151,296.66 and 61,410.96

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Solution

The fourth proportional to 100,940.99, 151,296.66 and 61,410.96 is: 92,046.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,940.99 : 151,296.66 = 61,410.96 : x
  2. Step 2: Convert to fraction form
    100,940.99/151,296.66 = 61,410.96/x
  3. Step 3: Cross multiply
    100,940.99x = 151,296.66 × 61,410.96
  4. Step 4: Simplify right side
    100,940.99x = 9,291,273,135.39
  5. Step 5: Solve for x
    x = 9,291,273,135.39/100,940.99
  6. Step 6: Final answer
    x = 92,046.59

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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.