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Finding the Fourth Proportional to 127,449.88, 191,162.43 and 38,704.16

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Solution

The fourth proportional to 127,449.88, 191,162.43 and 38,704.16 is: 58,052.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,449.88 : 191,162.43 = 38,704.16 : x
  2. Step 2: Convert to fraction form
    127,449.88/191,162.43 = 38,704.16/x
  3. Step 3: Cross multiply
    127,449.88x = 191,162.43 × 38,704.16
  4. Step 4: Simplify right side
    127,449.88x = 7,398,781,754.61
  5. Step 5: Solve for x
    x = 7,398,781,754.61/127,449.88
  6. Step 6: Final answer
    x = 58,052.48

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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.