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Finding the Fourth Proportional to 122,991.20, 184,486.80 and 44,113.40

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Solution

The fourth proportional to 122,991.20, 184,486.80 and 44,113.40 is: 66,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,991.20 : 184,486.80 = 44,113.40 : x
  2. Step 2: Convert to fraction form
    122,991.20/184,486.80 = 44,113.40/x
  3. Step 3: Cross multiply
    122,991.20x = 184,486.80 × 44,113.40
  4. Step 4: Simplify right side
    122,991.20x = 8,138,340,003.12
  5. Step 5: Solve for x
    x = 8,138,340,003.12/122,991.20
  6. Step 6: Final answer
    x = 66,170.10

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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.