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Finding the Fourth Proportional to 122,993.90, 184,490.85 and 60,785.90

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Solution

The fourth proportional to 122,993.90, 184,490.85 and 60,785.90 is: 91,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,993.90 : 184,490.85 = 60,785.90 : x
  2. Step 2: Convert to fraction form
    122,993.90/184,490.85 = 60,785.90/x
  3. Step 3: Cross multiply
    122,993.90x = 184,490.85 × 60,785.90
  4. Step 4: Simplify right side
    122,993.90x = 11,214,442,359.02
  5. Step 5: Solve for x
    x = 11,214,442,359.02/122,993.90
  6. Step 6: Final answer
    x = 91,178.85

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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.