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Finding the Fourth Proportional to 192,772.60, 266,195.10 and 121,276.60

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Solution

The fourth proportional to 192,772.60, 266,195.10 and 121,276.60 is: 167,467.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,772.60 : 266,195.10 = 121,276.60 : x
  2. Step 2: Convert to fraction form
    192,772.60/266,195.10 = 121,276.60/x
  3. Step 3: Cross multiply
    192,772.60x = 266,195.10 × 121,276.60
  4. Step 4: Simplify right side
    192,772.60x = 32,283,236,664.66
  5. Step 5: Solve for x
    x = 32,283,236,664.66/192,772.60
  6. Step 6: Final answer
    x = 167,467.97

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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.