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Finding the Fourth Proportional to 76,793.28, 115,253.28 and 59,369.28

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Solution

The fourth proportional to 76,793.28, 115,253.28 and 59,369.28 is: 89,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,793.28 : 115,253.28 = 59,369.28 : x
  2. Step 2: Convert to fraction form
    76,793.28/115,253.28 = 59,369.28/x
  3. Step 3: Cross multiply
    76,793.28x = 115,253.28 × 59,369.28
  4. Step 4: Simplify right side
    76,793.28x = 6,842,504,251.24
  5. Step 5: Solve for x
    x = 6,842,504,251.24/76,793.28
  6. Step 6: Final answer
    x = 89,102.90

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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.