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Finding the Fourth Proportional to 43,593.28, 65,361.78 and 18,649.60

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Solution

The fourth proportional to 43,593.28, 65,361.78 and 18,649.60 is: 27,962.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,593.28 : 65,361.78 = 18,649.60 : x
  2. Step 2: Convert to fraction form
    43,593.28/65,361.78 = 18,649.60/x
  3. Step 3: Cross multiply
    43,593.28x = 65,361.78 × 18,649.60
  4. Step 4: Simplify right side
    43,593.28x = 1,218,971,052.29
  5. Step 5: Solve for x
    x = 1,218,971,052.29/43,593.28
  6. Step 6: Final answer
    x = 27,962.36

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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.