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Finding the Fourth Proportional to 122,982.60, 184,473.90 and 69,619.80

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Solution

The fourth proportional to 122,982.60, 184,473.90 and 69,619.80 is: 104,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,982.60 : 184,473.90 = 69,619.80 : x
  2. Step 2: Convert to fraction form
    122,982.60/184,473.90 = 69,619.80/x
  3. Step 3: Cross multiply
    122,982.60x = 184,473.90 × 69,619.80
  4. Step 4: Simplify right side
    122,982.60x = 12,843,036,023.22
  5. Step 5: Solve for x
    x = 12,843,036,023.22/122,982.60
  6. Step 6: Final answer
    x = 104,429.70

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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.