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Finding the Fourth Proportional to 122,942.80, 184,414.20 and 60,605.20

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Solution

The fourth proportional to 122,942.80, 184,414.20 and 60,605.20 is: 90,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,942.80 : 184,414.20 = 60,605.20 : x
  2. Step 2: Convert to fraction form
    122,942.80/184,414.20 = 60,605.20/x
  3. Step 3: Cross multiply
    122,942.80x = 184,414.20 × 60,605.20
  4. Step 4: Simplify right side
    122,942.80x = 11,176,459,473.84
  5. Step 5: Solve for x
    x = 11,176,459,473.84/122,942.80
  6. Step 6: Final answer
    x = 90,907.80

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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.