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Finding the Fourth Proportional to 69,609.60, 104,446.80 and 36,367.20

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Solution

The fourth proportional to 69,609.60, 104,446.80 and 36,367.20 is: 54,567.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,609.60 : 104,446.80 = 36,367.20 : x
  2. Step 2: Convert to fraction form
    69,609.60/104,446.80 = 36,367.20/x
  3. Step 3: Cross multiply
    69,609.60x = 104,446.80 × 36,367.20
  4. Step 4: Simplify right side
    69,609.60x = 3,798,437,664.96
  5. Step 5: Solve for x
    x = 3,798,437,664.96/69,609.60
  6. Step 6: Final answer
    x = 54,567.73

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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.