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Finding the Fourth Proportional to 127,912.56, 191,751.96 and 44,761.20

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Solution

The fourth proportional to 127,912.56, 191,751.96 and 44,761.20 is: 67,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,912.56 : 191,751.96 = 44,761.20 : x
  2. Step 2: Convert to fraction form
    127,912.56/191,751.96 = 44,761.20/x
  3. Step 3: Cross multiply
    127,912.56x = 191,751.96 × 44,761.20
  4. Step 4: Simplify right side
    127,912.56x = 8,583,047,831.95
  5. Step 5: Solve for x
    x = 8,583,047,831.95/127,912.56
  6. Step 6: Final answer
    x = 67,100.90

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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.