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Finding the Fourth Proportional to 199,243.56, 298,864.80 and 66,133.83

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Solution

The fourth proportional to 199,243.56, 298,864.80 and 66,133.83 is: 99,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,243.56 : 298,864.80 = 66,133.83 : x
  2. Step 2: Convert to fraction form
    199,243.56/298,864.80 = 66,133.83/x
  3. Step 3: Cross multiply
    199,243.56x = 298,864.80 × 66,133.83
  4. Step 4: Simplify right side
    199,243.56x = 19,765,073,876.18
  5. Step 5: Solve for x
    x = 19,765,073,876.18/199,243.56
  6. Step 6: Final answer
    x = 99,200.57

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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.