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Finding the Fourth Proportional to 122,442.60, 183,620.70 and 43,559.40

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Solution

The fourth proportional to 122,442.60, 183,620.70 and 43,559.40 is: 65,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,442.60 : 183,620.70 = 43,559.40 : x
  2. Step 2: Convert to fraction form
    122,442.60/183,620.70 = 43,559.40/x
  3. Step 3: Cross multiply
    122,442.60x = 183,620.70 × 43,559.40
  4. Step 4: Simplify right side
    122,442.60x = 7,998,407,519.58
  5. Step 5: Solve for x
    x = 7,998,407,519.58/122,442.60
  6. Step 6: Final answer
    x = 65,323.73

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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.