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Finding the Fourth Proportional to 148,974.80, 223,440.60 and 43,782.80

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Solution

The fourth proportional to 148,974.80, 223,440.60 and 43,782.80 is: 65,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,974.80 : 223,440.60 = 43,782.80 : x
  2. Step 2: Convert to fraction form
    148,974.80/223,440.60 = 43,782.80/x
  3. Step 3: Cross multiply
    148,974.80x = 223,440.60 × 43,782.80
  4. Step 4: Simplify right side
    148,974.80x = 9,782,855,101.68
  5. Step 5: Solve for x
    x = 9,782,855,101.68/148,974.80
  6. Step 6: Final answer
    x = 65,667.85

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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.