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Finding the Fourth Proportional to 57,369.92, 86,054.88 and 20,433.92

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Solution

The fourth proportional to 57,369.92, 86,054.88 and 20,433.92 is: 30,650.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,369.92 : 86,054.88 = 20,433.92 : x
  2. Step 2: Convert to fraction form
    57,369.92/86,054.88 = 20,433.92/x
  3. Step 3: Cross multiply
    57,369.92x = 86,054.88 × 20,433.92
  4. Step 4: Simplify right side
    57,369.92x = 1,758,438,533.53
  5. Step 5: Solve for x
    x = 1,758,438,533.53/57,369.92
  6. Step 6: Final answer
    x = 30,650.88

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Similar ratio
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1.5x scale

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.