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Finding the Fourth Proportional to 57,989.42, 86,836.43 and 38,208.02

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Solution

The fourth proportional to 57,989.42, 86,836.43 and 38,208.02 is: 57,214.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.42 : 86,836.43 = 38,208.02 : x
  2. Step 2: Convert to fraction form
    57,989.42/86,836.43 = 38,208.02/x
  3. Step 3: Cross multiply
    57,989.42x = 86,836.43 × 38,208.02
  4. Step 4: Simplify right side
    57,989.42x = 3,317,848,054.17
  5. Step 5: Solve for x
    x = 3,317,848,054.17/57,989.42
  6. Step 6: Final answer
    x = 57,214.71

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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.