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Finding the Fourth Proportional to 43,859.70, 65,797.64 and 13,881.48

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Solution

The fourth proportional to 43,859.70, 65,797.64 and 13,881.48 is: 20,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,859.70 : 65,797.64 = 13,881.48 : x
  2. Step 2: Convert to fraction form
    43,859.70/65,797.64 = 13,881.48/x
  3. Step 3: Cross multiply
    43,859.70x = 65,797.64 × 13,881.48
  4. Step 4: Simplify right side
    43,859.70x = 913,368,554.30
  5. Step 5: Solve for x
    x = 913,368,554.30/43,859.70
  6. Step 6: Final answer
    x = 20,824.78

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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.