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Finding the Fourth Proportional to 32,611.20, 48,916.80 and 19,456.80

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Solution

The fourth proportional to 32,611.20, 48,916.80 and 19,456.80 is: 29,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,611.20 : 48,916.80 = 19,456.80 : x
  2. Step 2: Convert to fraction form
    32,611.20/48,916.80 = 19,456.80/x
  3. Step 3: Cross multiply
    32,611.20x = 48,916.80 × 19,456.80
  4. Step 4: Simplify right side
    32,611.20x = 951,764,394.24
  5. Step 5: Solve for x
    x = 951,764,394.24/32,611.20
  6. Step 6: Final answer
    x = 29,185.20

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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.