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Finding the Fourth Proportional to 72,609.60, 108,810.56 and 41,380.48

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Solution

The fourth proportional to 72,609.60, 108,810.56 and 41,380.48 is: 62,011.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609.60 : 108,810.56 = 41,380.48 : x
  2. Step 2: Convert to fraction form
    72,609.60/108,810.56 = 41,380.48/x
  3. Step 3: Cross multiply
    72,609.60x = 108,810.56 × 41,380.48
  4. Step 4: Simplify right side
    72,609.60x = 4,502,633,201.87
  5. Step 5: Solve for x
    x = 4,502,633,201.87/72,609.60
  6. Step 6: Final answer
    x = 62,011.54

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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.