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Finding the Fourth Proportional to 127,996.70, 191,623.21 and 74,525.56

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Solution

The fourth proportional to 127,996.70, 191,623.21 and 74,525.56 is: 111,571.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,996.70 : 191,623.21 = 74,525.56 : x
  2. Step 2: Convert to fraction form
    127,996.70/191,623.21 = 74,525.56/x
  3. Step 3: Cross multiply
    127,996.70x = 191,623.21 × 74,525.56
  4. Step 4: Simplify right side
    127,996.70x = 14,280,827,087.46
  5. Step 5: Solve for x
    x = 14,280,827,087.46/127,996.70
  6. Step 6: Final answer
    x = 111,571.84

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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.