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Finding the Fourth Proportional to 92,961.54, 128,286.87 and 50,520.08

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Solution

The fourth proportional to 92,961.54, 128,286.87 and 50,520.08 is: 69,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961.54 : 128,286.87 = 50,520.08 : x
  2. Step 2: Convert to fraction form
    92,961.54/128,286.87 = 50,520.08/x
  3. Step 3: Cross multiply
    92,961.54x = 128,286.87 × 50,520.08
  4. Step 4: Simplify right side
    92,961.54x = 6,481,062,293.92
  5. Step 5: Solve for x
    x = 6,481,062,293.92/92,961.54
  6. Step 6: Final answer
    x = 69,717.67

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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.