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Finding the Fourth Proportional to 43,372.62, 65,058.95 and 12,207.87

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Solution

The fourth proportional to 43,372.62, 65,058.95 and 12,207.87 is: 18,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,372.62 : 65,058.95 = 12,207.87 : x
  2. Step 2: Convert to fraction form
    43,372.62/65,058.95 = 12,207.87/x
  3. Step 3: Cross multiply
    43,372.62x = 65,058.95 × 12,207.87
  4. Step 4: Simplify right side
    43,372.62x = 794,230,817.60
  5. Step 5: Solve for x
    x = 794,230,817.60/43,372.62
  6. Step 6: Final answer
    x = 18,311.80

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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.