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Finding the Fourth Proportional to 121,098.60, 167,122.62 and 67,384.77

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Solution

The fourth proportional to 121,098.60, 167,122.62 and 67,384.77 is: 92,994.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,098.60 : 167,122.62 = 67,384.77 : x
  2. Step 2: Convert to fraction form
    121,098.60/167,122.62 = 67,384.77/x
  3. Step 3: Cross multiply
    121,098.60x = 167,122.62 × 67,384.77
  4. Step 4: Simplify right side
    121,098.60x = 11,261,519,310.50
  5. Step 5: Solve for x
    x = 11,261,519,310.50/121,098.60
  6. Step 6: Final answer
    x = 92,994.63

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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.