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Finding the Fourth Proportional to 43,261.20, 64,843.80 and 16,957.20

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Solution

The fourth proportional to 43,261.20, 64,843.80 and 16,957.20 is: 25,416.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,261.20 : 64,843.80 = 16,957.20 : x
  2. Step 2: Convert to fraction form
    43,261.20/64,843.80 = 16,957.20/x
  3. Step 3: Cross multiply
    43,261.20x = 64,843.80 × 16,957.20
  4. Step 4: Simplify right side
    43,261.20x = 1,099,569,285.36
  5. Step 5: Solve for x
    x = 1,099,569,285.36/43,261.20
  6. Step 6: Final answer
    x = 25,416.99

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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.