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Finding the Fourth Proportional to 32,979.20, 49,468.80 and 8,355.20

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Solution

The fourth proportional to 32,979.20, 49,468.80 and 8,355.20 is: 12,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,979.20 : 49,468.80 = 8,355.20 : x
  2. Step 2: Convert to fraction form
    32,979.20/49,468.80 = 8,355.20/x
  3. Step 3: Cross multiply
    32,979.20x = 49,468.80 × 8,355.20
  4. Step 4: Simplify right side
    32,979.20x = 413,321,717.76
  5. Step 5: Solve for x
    x = 413,321,717.76/32,979.20
  6. Step 6: Final answer
    x = 12,532.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.