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Finding the Fourth Proportional to 120,604.54, 180,768.90 and 57,334.90

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Solution

The fourth proportional to 120,604.54, 180,768.90 and 57,334.90 is: 85,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,604.54 : 180,768.90 = 57,334.90 : x
  2. Step 2: Convert to fraction form
    120,604.54/180,768.90 = 57,334.90/x
  3. Step 3: Cross multiply
    120,604.54x = 180,768.90 × 57,334.90
  4. Step 4: Simplify right side
    120,604.54x = 10,364,366,804.61
  5. Step 5: Solve for x
    x = 10,364,366,804.61/120,604.54
  6. Step 6: Final answer
    x = 85,936.79

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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.