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Finding the Fourth Proportional to 122,951.40, 184,427.10 and 91,847.40

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Solution

The fourth proportional to 122,951.40, 184,427.10 and 91,847.40 is: 137,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,951.40 : 184,427.10 = 91,847.40 : x
  2. Step 2: Convert to fraction form
    122,951.40/184,427.10 = 91,847.40/x
  3. Step 3: Cross multiply
    122,951.40x = 184,427.10 × 91,847.40
  4. Step 4: Simplify right side
    122,951.40x = 16,939,149,624.54
  5. Step 5: Solve for x
    x = 16,939,149,624.54/122,951.40
  6. Step 6: Final answer
    x = 137,771.10

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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.