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Finding the Fourth Proportional to 207,717.64, 311,629.01 and 57,957.86

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Solution

The fourth proportional to 207,717.64, 311,629.01 and 57,957.86 is: 86,951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,717.64 : 311,629.01 = 57,957.86 : x
  2. Step 2: Convert to fraction form
    207,717.64/311,629.01 = 57,957.86/x
  3. Step 3: Cross multiply
    207,717.64x = 311,629.01 × 57,957.86
  4. Step 4: Simplify right side
    207,717.64x = 18,061,351,022.80
  5. Step 5: Solve for x
    x = 18,061,351,022.80/207,717.64
  6. Step 6: Final answer
    x = 86,951.46

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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.