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Finding the Fourth Proportional to 43,662.74, 65,499.64 and 14,079.92

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Solution

The fourth proportional to 43,662.74, 65,499.64 and 14,079.92 is: 21,121.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,662.74 : 65,499.64 = 14,079.92 : x
  2. Step 2: Convert to fraction form
    43,662.74/65,499.64 = 14,079.92/x
  3. Step 3: Cross multiply
    43,662.74x = 65,499.64 × 14,079.92
  4. Step 4: Simplify right side
    43,662.74x = 922,229,691.23
  5. Step 5: Solve for x
    x = 922,229,691.23/43,662.74
  6. Step 6: Final answer
    x = 21,121.66

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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.