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Finding the Fourth Proportional to 122,992.40, 184,488.60 and 107,440.40

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Solution

The fourth proportional to 122,992.40, 184,488.60 and 107,440.40 is: 161,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,992.40 : 184,488.60 = 107,440.40 : x
  2. Step 2: Convert to fraction form
    122,992.40/184,488.60 = 107,440.40/x
  3. Step 3: Cross multiply
    122,992.40x = 184,488.60 × 107,440.40
  4. Step 4: Simplify right side
    122,992.40x = 19,821,528,979.44
  5. Step 5: Solve for x
    x = 19,821,528,979.44/122,992.40
  6. Step 6: Final answer
    x = 161,160.60

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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.