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Finding the Fourth Proportional to 192,791.89, 266,015.00 and 121,130.39

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Solution

The fourth proportional to 192,791.89, 266,015.00 and 121,130.39 is: 167,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,791.89 : 266,015.00 = 121,130.39 : x
  2. Step 2: Convert to fraction form
    192,791.89/266,015.00 = 121,130.39/x
  3. Step 3: Cross multiply
    192,791.89x = 266,015.00 × 121,130.39
  4. Step 4: Simplify right side
    192,791.89x = 32,222,500,778.61
  5. Step 5: Solve for x
    x = 32,222,500,778.61/192,791.89
  6. Step 6: Final answer
    x = 167,136.19

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1.5x scale

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.