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Finding the Fourth Proportional to 127,913.72, 191,910.54 and 43,675.88

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Solution

The fourth proportional to 127,913.72, 191,910.54 and 43,675.88 is: 65,527.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,913.72 : 191,910.54 = 43,675.88 : x
  2. Step 2: Convert to fraction form
    127,913.72/191,910.54 = 43,675.88/x
  3. Step 3: Cross multiply
    127,913.72x = 191,910.54 × 43,675.88
  4. Step 4: Simplify right side
    127,913.72x = 8,381,861,715.78
  5. Step 5: Solve for x
    x = 8,381,861,715.78/127,913.72
  6. Step 6: Final answer
    x = 65,527.46

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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.