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Finding the Fourth Proportional to 60,768.62, 91,145.64 and 16,391.96

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Solution

The fourth proportional to 60,768.62, 91,145.64 and 16,391.96 is: 24,585.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,768.62 : 91,145.64 = 16,391.96 : x
  2. Step 2: Convert to fraction form
    60,768.62/91,145.64 = 16,391.96/x
  3. Step 3: Cross multiply
    60,768.62x = 91,145.64 × 16,391.96
  4. Step 4: Simplify right side
    60,768.62x = 1,494,055,685.05
  5. Step 5: Solve for x
    x = 1,494,055,685.05/60,768.62
  6. Step 6: Final answer
    x = 24,585.97

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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.