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Finding the Fourth Proportional to 121,069.02, 167,072.72 and 67,352.88

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Solution

The fourth proportional to 121,069.02, 167,072.72 and 67,352.88 is: 92,945.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,069.02 : 167,072.72 = 67,352.88 : x
  2. Step 2: Convert to fraction form
    121,069.02/167,072.72 = 67,352.88/x
  3. Step 3: Cross multiply
    121,069.02x = 167,072.72 × 67,352.88
  4. Step 4: Simplify right side
    121,069.02x = 11,252,828,861.43
  5. Step 5: Solve for x
    x = 11,252,828,861.43/121,069.02
  6. Step 6: Final answer
    x = 92,945.57

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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.