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Finding the Fourth Proportional to 207,034.57, 310,516.62 and 66,793.20

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Solution

The fourth proportional to 207,034.57, 310,516.62 and 66,793.20 is: 100,178.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,034.57 : 310,516.62 = 66,793.20 : x
  2. Step 2: Convert to fraction form
    207,034.57/310,516.62 = 66,793.20/x
  3. Step 3: Cross multiply
    207,034.57x = 310,516.62 × 66,793.20
  4. Step 4: Simplify right side
    207,034.57x = 20,740,398,702.98
  5. Step 5: Solve for x
    x = 20,740,398,702.98/207,034.57
  6. Step 6: Final answer
    x = 100,178.43

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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.