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Finding the Fourth Proportional to 72,601.28, 108,913.46 and 25,230.86

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Solution

The fourth proportional to 72,601.28, 108,913.46 and 25,230.86 is: 37,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,601.28 : 108,913.46 = 25,230.86 : x
  2. Step 2: Convert to fraction form
    72,601.28/108,913.46 = 25,230.86/x
  3. Step 3: Cross multiply
    72,601.28x = 108,913.46 × 25,230.86
  4. Step 4: Simplify right side
    72,601.28x = 2,747,980,261.38
  5. Step 5: Solve for x
    x = 2,747,980,261.38/72,601.28
  6. Step 6: Final answer
    x = 37,850.30

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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.