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Finding the Fourth Proportional to 57,399.92, 79,211.34 and 31,905.62

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Solution

The fourth proportional to 57,399.92, 79,211.34 and 31,905.62 is: 44,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,399.92 : 79,211.34 = 31,905.62 : x
  2. Step 2: Convert to fraction form
    57,399.92/79,211.34 = 31,905.62/x
  3. Step 3: Cross multiply
    57,399.92x = 79,211.34 × 31,905.62
  4. Step 4: Simplify right side
    57,399.92x = 2,527,286,913.73
  5. Step 5: Solve for x
    x = 2,527,286,913.73/57,399.92
  6. Step 6: Final answer
    x = 44,029.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.