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Finding the Fourth Proportional to 133,115.88, 199,911.78 and 127,764.60

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Solution

The fourth proportional to 133,115.88, 199,911.78 and 127,764.60 is: 191,875.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.88 : 199,911.78 = 127,764.60 : x
  2. Step 2: Convert to fraction form
    133,115.88/199,911.78 = 127,764.60/x
  3. Step 3: Cross multiply
    133,115.88x = 199,911.78 × 127,764.60
  4. Step 4: Simplify right side
    133,115.88x = 25,541,648,606.99
  5. Step 5: Solve for x
    x = 25,541,648,606.99/133,115.88
  6. Step 6: Final answer
    x = 191,875.29

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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.