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Finding the Fourth Proportional to 121,025.94, 167,021.71 and 67,309.80

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Solution

The fourth proportional to 121,025.94, 167,021.71 and 67,309.80 is: 92,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,025.94 : 167,021.71 = 67,309.80 : x
  2. Step 2: Convert to fraction form
    121,025.94/167,021.71 = 67,309.80/x
  3. Step 3: Cross multiply
    121,025.94x = 167,021.71 × 67,309.80
  4. Step 4: Simplify right side
    121,025.94x = 11,242,198,040.65
  5. Step 5: Solve for x
    x = 11,242,198,040.65/121,025.94
  6. Step 6: Final answer
    x = 92,890.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.