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Finding the Fourth Proportional to 127,943.54, 191,859.67 and 67,958.79

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Solution

The fourth proportional to 127,943.54, 191,859.67 and 67,958.79 is: 101,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,943.54 : 191,859.67 = 67,958.79 : x
  2. Step 2: Convert to fraction form
    127,943.54/191,859.67 = 67,958.79/x
  3. Step 3: Cross multiply
    127,943.54x = 191,859.67 × 67,958.79
  4. Step 4: Simplify right side
    127,943.54x = 13,038,551,023.00
  5. Step 5: Solve for x
    x = 13,038,551,023.00/127,943.54
  6. Step 6: Final answer
    x = 101,908.63

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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.