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Finding the Fourth Proportional to 131,793.40, 197,690.10 and 122,980.60

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Solution

The fourth proportional to 131,793.40, 197,690.10 and 122,980.60 is: 184,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,793.40 : 197,690.10 = 122,980.60 : x
  2. Step 2: Convert to fraction form
    131,793.40/197,690.10 = 122,980.60/x
  3. Step 3: Cross multiply
    131,793.40x = 197,690.10 × 122,980.60
  4. Step 4: Simplify right side
    131,793.40x = 24,312,047,112.06
  5. Step 5: Solve for x
    x = 24,312,047,112.06/131,793.40
  6. Step 6: Final answer
    x = 184,470.90

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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.