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Finding the Fourth Proportional to 207,034.70, 310,516.81 and 66,793.32

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Solution

The fourth proportional to 207,034.70, 310,516.81 and 66,793.32 is: 100,178.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,034.70 : 310,516.81 = 66,793.32 : x
  2. Step 2: Convert to fraction form
    207,034.70/310,516.81 = 66,793.32/x
  3. Step 3: Cross multiply
    207,034.70x = 310,516.81 × 66,793.32
  4. Step 4: Simplify right side
    207,034.70x = 20,740,448,488.73
  5. Step 5: Solve for x
    x = 20,740,448,488.73/207,034.70
  6. Step 6: Final answer
    x = 100,178.61

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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.