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Finding the Fourth Proportional to 132,912.60, 199,334.88 and 39,396.48

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Solution

The fourth proportional to 132,912.60, 199,334.88 and 39,396.48 is: 59,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,912.60 : 199,334.88 = 39,396.48 : x
  2. Step 2: Convert to fraction form
    132,912.60/199,334.88 = 39,396.48/x
  3. Step 3: Cross multiply
    132,912.60x = 199,334.88 × 39,396.48
  4. Step 4: Simplify right side
    132,912.60x = 7,853,092,613.22
  5. Step 5: Solve for x
    x = 7,853,092,613.22/132,912.60
  6. Step 6: Final answer
    x = 59,084.64

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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.