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Finding the Fourth Proportional to 207,660.52, 311,490.78 and 67,433.32

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Solution

The fourth proportional to 207,660.52, 311,490.78 and 67,433.32 is: 101,149.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,660.52 : 311,490.78 = 67,433.32 : x
  2. Step 2: Convert to fraction form
    207,660.52/311,490.78 = 67,433.32/x
  3. Step 3: Cross multiply
    207,660.52x = 311,490.78 × 67,433.32
  4. Step 4: Simplify right side
    207,660.52x = 21,004,857,444.79
  5. Step 5: Solve for x
    x = 21,004,857,444.79/207,660.52
  6. Step 6: Final answer
    x = 101,149.98

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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.