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Finding the Fourth Proportional to 127,912.67, 191,805.09 and 74,622.96

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Solution

The fourth proportional to 127,912.67, 191,805.09 and 74,622.96 is: 111,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,912.67 : 191,805.09 = 74,622.96 : x
  2. Step 2: Convert to fraction form
    127,912.67/191,805.09 = 74,622.96/x
  3. Step 3: Cross multiply
    127,912.67x = 191,805.09 × 74,622.96
  4. Step 4: Simplify right side
    127,912.67x = 14,313,063,558.87
  5. Step 5: Solve for x
    x = 14,313,063,558.87/127,912.67
  6. Step 6: Final answer
    x = 111,897.15

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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.