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Finding the Fourth Proportional to 43,974.89, 65,976.45 and 14,385.99

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Solution

The fourth proportional to 43,974.89, 65,976.45 and 14,385.99 is: 21,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,974.89 : 65,976.45 = 14,385.99 : x
  2. Step 2: Convert to fraction form
    43,974.89/65,976.45 = 14,385.99/x
  3. Step 3: Cross multiply
    43,974.89x = 65,976.45 × 14,385.99
  4. Step 4: Simplify right side
    43,974.89x = 949,136,549.94
  5. Step 5: Solve for x
    x = 949,136,549.94/43,974.89
  6. Step 6: Final answer
    x = 21,583.61

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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.