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Finding the Fourth Proportional to 215,960.20, 323,843.10 and 97,570.60

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Solution

The fourth proportional to 215,960.20, 323,843.10 and 97,570.60 is: 146,311.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,960.20 : 323,843.10 = 97,570.60 : x
  2. Step 2: Convert to fraction form
    215,960.20/323,843.10 = 97,570.60/x
  3. Step 3: Cross multiply
    215,960.20x = 323,843.10 × 97,570.60
  4. Step 4: Simplify right side
    215,960.20x = 31,597,565,572.86
  5. Step 5: Solve for x
    x = 31,597,565,572.86/215,960.20
  6. Step 6: Final answer
    x = 146,311.99

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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.