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Finding the Fourth Proportional to 57,236.64, 78,989.67 and 33,361.89

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Solution

The fourth proportional to 57,236.64, 78,989.67 and 33,361.89 is: 46,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,236.64 : 78,989.67 = 33,361.89 : x
  2. Step 2: Convert to fraction form
    57,236.64/78,989.67 = 33,361.89/x
  3. Step 3: Cross multiply
    57,236.64x = 78,989.67 × 33,361.89
  4. Step 4: Simplify right side
    57,236.64x = 2,635,244,681.68
  5. Step 5: Solve for x
    x = 2,635,244,681.68/57,236.64
  6. Step 6: Final answer
    x = 46,041.22

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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.