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Finding the Fourth Proportional to 127,892.89, 191,856.84 and 43,630.43

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Solution

The fourth proportional to 127,892.89, 191,856.84 and 43,630.43 is: 65,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.89 : 191,856.84 = 43,630.43 : x
  2. Step 2: Convert to fraction form
    127,892.89/191,856.84 = 43,630.43/x
  3. Step 3: Cross multiply
    127,892.89x = 191,856.84 × 43,630.43
  4. Step 4: Simplify right side
    127,892.89x = 8,370,795,563.11
  5. Step 5: Solve for x
    x = 8,370,795,563.11/127,892.89
  6. Step 6: Final answer
    x = 65,451.61

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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.