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Finding the Fourth Proportional to 311,549.16, 467,013.18 and 131,679.96

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Solution

The fourth proportional to 311,549.16, 467,013.18 and 131,679.96 is: 197,388.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,549.16 : 467,013.18 = 131,679.96 : x
  2. Step 2: Convert to fraction form
    311,549.16/467,013.18 = 131,679.96/x
  3. Step 3: Cross multiply
    311,549.16x = 467,013.18 × 131,679.96
  4. Step 4: Simplify right side
    311,549.16x = 61,496,276,861.87
  5. Step 5: Solve for x
    x = 61,496,276,861.87/311,549.16
  6. Step 6: Final answer
    x = 197,388.68

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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.