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Finding the Fourth Proportional to 57,361.10, 86,053.81 and 17,921.19

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Solution

The fourth proportional to 57,361.10, 86,053.81 and 17,921.19 is: 26,885.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.10 : 86,053.81 = 17,921.19 : x
  2. Step 2: Convert to fraction form
    57,361.10/86,053.81 = 17,921.19/x
  3. Step 3: Cross multiply
    57,361.10x = 86,053.81 × 17,921.19
  4. Step 4: Simplify right side
    57,361.10x = 1,542,186,634.43
  5. Step 5: Solve for x
    x = 1,542,186,634.43/57,361.10
  6. Step 6: Final answer
    x = 26,885.58

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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.