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Finding the Fourth Proportional to 118,524.42, 177,749.64 and 39,620.34

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Solution

The fourth proportional to 118,524.42, 177,749.64 and 39,620.34 is: 59,418.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,524.42 : 177,749.64 = 39,620.34 : x
  2. Step 2: Convert to fraction form
    118,524.42/177,749.64 = 39,620.34/x
  3. Step 3: Cross multiply
    118,524.42x = 177,749.64 × 39,620.34
  4. Step 4: Simplify right side
    118,524.42x = 7,042,501,171.68
  5. Step 5: Solve for x
    x = 7,042,501,171.68/118,524.42
  6. Step 6: Final answer
    x = 59,418.14

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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.