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Finding the Fourth Proportional to 122,990.70, 184,486.05 and 110,937.90

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Solution

The fourth proportional to 122,990.70, 184,486.05 and 110,937.90 is: 166,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,990.70 : 184,486.05 = 110,937.90 : x
  2. Step 2: Convert to fraction form
    122,990.70/184,486.05 = 110,937.90/x
  3. Step 3: Cross multiply
    122,990.70x = 184,486.05 × 110,937.90
  4. Step 4: Simplify right side
    122,990.70x = 20,466,494,966.30
  5. Step 5: Solve for x
    x = 20,466,494,966.30/122,990.70
  6. Step 6: Final answer
    x = 166,406.85

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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.