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Finding the Fourth Proportional to 121,296.87, 167,390.84 and 66,851.02

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Solution

The fourth proportional to 121,296.87, 167,390.84 and 66,851.02 is: 92,255.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,296.87 : 167,390.84 = 66,851.02 : x
  2. Step 2: Convert to fraction form
    121,296.87/167,390.84 = 66,851.02/x
  3. Step 3: Cross multiply
    121,296.87x = 167,390.84 × 66,851.02
  4. Step 4: Simplify right side
    121,296.87x = 11,190,247,959.67
  5. Step 5: Solve for x
    x = 11,190,247,959.67/121,296.87
  6. Step 6: Final answer
    x = 92,255.04

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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.