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Finding the Fourth Proportional to 45,978.66, 68,967.55 and 27,245.21

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Solution

The fourth proportional to 45,978.66, 68,967.55 and 27,245.21 is: 40,867.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,978.66 : 68,967.55 = 27,245.21 : x
  2. Step 2: Convert to fraction form
    45,978.66/68,967.55 = 27,245.21/x
  3. Step 3: Cross multiply
    45,978.66x = 68,967.55 × 27,245.21
  4. Step 4: Simplify right side
    45,978.66x = 1,879,035,487.24
  5. Step 5: Solve for x
    x = 1,879,035,487.24/45,978.66
  6. Step 6: Final answer
    x = 40,867.56

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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.