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Finding the Fourth Proportional to 127,912.01, 191,891.70 and 43,667.55

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Solution

The fourth proportional to 127,912.01, 191,891.70 and 43,667.55 is: 65,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,912.01 : 191,891.70 = 43,667.55 : x
  2. Step 2: Convert to fraction form
    127,912.01/191,891.70 = 43,667.55/x
  3. Step 3: Cross multiply
    127,912.01x = 191,891.70 × 43,667.55
  4. Step 4: Simplify right side
    127,912.01x = 8,379,440,404.34
  5. Step 5: Solve for x
    x = 8,379,440,404.34/127,912.01
  6. Step 6: Final answer
    x = 65,509.41

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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.