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Finding the Fourth Proportional to 133,285.92, 199,960.13 and 91,185.82

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Solution

The fourth proportional to 133,285.92, 199,960.13 and 91,185.82 is: 136,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,285.92 : 199,960.13 = 91,185.82 : x
  2. Step 2: Convert to fraction form
    133,285.92/199,960.13 = 91,185.82/x
  3. Step 3: Cross multiply
    133,285.92x = 199,960.13 × 91,185.82
  4. Step 4: Simplify right side
    133,285.92x = 18,233,528,149.42
  5. Step 5: Solve for x
    x = 18,233,528,149.42/133,285.92
  6. Step 6: Final answer
    x = 136,800.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.