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Finding the Fourth Proportional to 132,361.88, 198,431.08 and 57,425.52

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Solution

The fourth proportional to 132,361.88, 198,431.08 and 57,425.52 is: 86,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,361.88 : 198,431.08 = 57,425.52 : x
  2. Step 2: Convert to fraction form
    132,361.88/198,431.08 = 57,425.52/x
  3. Step 3: Cross multiply
    132,361.88x = 198,431.08 × 57,425.52
  4. Step 4: Simplify right side
    132,361.88x = 11,395,007,953.16
  5. Step 5: Solve for x
    x = 11,395,007,953.16/132,361.88
  6. Step 6: Final answer
    x = 86,089.80

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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.