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Finding the Fourth Proportional to 171,361.68, 236,804.43 and 128,846.40

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Solution

The fourth proportional to 171,361.68, 236,804.43 and 128,846.40 is: 178,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,361.68 : 236,804.43 = 128,846.40 : x
  2. Step 2: Convert to fraction form
    171,361.68/236,804.43 = 128,846.40/x
  3. Step 3: Cross multiply
    171,361.68x = 236,804.43 × 128,846.40
  4. Step 4: Simplify right side
    171,361.68x = 30,511,398,309.55
  5. Step 5: Solve for x
    x = 30,511,398,309.55/171,361.68
  6. Step 6: Final answer
    x = 178,052.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.