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Finding the Fourth Proportional to 122,981.64, 184,493.49 and 56,427.49

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Solution

The fourth proportional to 122,981.64, 184,493.49 and 56,427.49 is: 84,650.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,981.64 : 184,493.49 = 56,427.49 : x
  2. Step 2: Convert to fraction form
    122,981.64/184,493.49 = 56,427.49/x
  3. Step 3: Cross multiply
    122,981.64x = 184,493.49 × 56,427.49
  4. Step 4: Simplify right side
    122,981.64x = 10,410,504,562.04
  5. Step 5: Solve for x
    x = 10,410,504,562.04/122,981.64
  6. Step 6: Final answer
    x = 84,650.88

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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.