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Finding the Fourth Proportional to 32,611.60, 48,976.80 and 19,489.60

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Solution

The fourth proportional to 32,611.60, 48,976.80 and 19,489.60 is: 29,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,611.60 : 48,976.80 = 19,489.60 : x
  2. Step 2: Convert to fraction form
    32,611.60/48,976.80 = 19,489.60/x
  3. Step 3: Cross multiply
    32,611.60x = 48,976.80 × 19,489.60
  4. Step 4: Simplify right side
    32,611.60x = 954,538,241.28
  5. Step 5: Solve for x
    x = 954,538,241.28/32,611.60
  6. Step 6: Final answer
    x = 29,269.90

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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.