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Finding the Fourth Proportional to 122,979.60, 184,469.40 and 108,464.40

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Solution

The fourth proportional to 122,979.60, 184,469.40 and 108,464.40 is: 162,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,979.60 : 184,469.40 = 108,464.40 : x
  2. Step 2: Convert to fraction form
    122,979.60/184,469.40 = 108,464.40/x
  3. Step 3: Cross multiply
    122,979.60x = 184,469.40 × 108,464.40
  4. Step 4: Simplify right side
    122,979.60x = 20,008,362,789.36
  5. Step 5: Solve for x
    x = 20,008,362,789.36/122,979.60
  6. Step 6: Final answer
    x = 162,696.60

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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.