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Finding the Fourth Proportional to 122,808.60, 184,310.10 and 47,964.60

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Solution

The fourth proportional to 122,808.60, 184,310.10 and 47,964.60 is: 71,984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,808.60 : 184,310.10 = 47,964.60 : x
  2. Step 2: Convert to fraction form
    122,808.60/184,310.10 = 47,964.60/x
  3. Step 3: Cross multiply
    122,808.60x = 184,310.10 × 47,964.60
  4. Step 4: Simplify right side
    122,808.60x = 8,840,360,222.46
  5. Step 5: Solve for x
    x = 8,840,360,222.46/122,808.60
  6. Step 6: Final answer
    x = 71,984.86

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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.