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Finding the Fourth Proportional to 122,956.80, 184,435.20 and 39,850.80

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Solution

The fourth proportional to 122,956.80, 184,435.20 and 39,850.80 is: 59,776.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.80 : 184,435.20 = 39,850.80 : x
  2. Step 2: Convert to fraction form
    122,956.80/184,435.20 = 39,850.80/x
  3. Step 3: Cross multiply
    122,956.80x = 184,435.20 × 39,850.80
  4. Step 4: Simplify right side
    122,956.80x = 7,349,890,268.16
  5. Step 5: Solve for x
    x = 7,349,890,268.16/122,956.80
  6. Step 6: Final answer
    x = 59,776.20

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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.