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Finding the Fourth Proportional to 43,912.75, 65,879.61 and 14,330.64

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Solution

The fourth proportional to 43,912.75, 65,879.61 and 14,330.64 is: 21,499.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,912.75 : 65,879.61 = 14,330.64 : x
  2. Step 2: Convert to fraction form
    43,912.75/65,879.61 = 14,330.64/x
  3. Step 3: Cross multiply
    43,912.75x = 65,879.61 × 14,330.64
  4. Step 4: Simplify right side
    43,912.75x = 944,096,974.25
  5. Step 5: Solve for x
    x = 944,096,974.25/43,912.75
  6. Step 6: Final answer
    x = 21,499.38

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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.