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Finding the Fourth Proportional to 68,420.44, 102,623.37 and 32,388.31

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Solution

The fourth proportional to 68,420.44, 102,623.37 and 32,388.31 is: 48,579.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,420.44 : 102,623.37 = 32,388.31 : x
  2. Step 2: Convert to fraction form
    68,420.44/102,623.37 = 32,388.31/x
  3. Step 3: Cross multiply
    68,420.44x = 102,623.37 × 32,388.31
  4. Step 4: Simplify right side
    68,420.44x = 3,323,797,520.80
  5. Step 5: Solve for x
    x = 3,323,797,520.80/68,420.44
  6. Step 6: Final answer
    x = 48,579.01

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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.