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Finding the Fourth Proportional to 41,940.32, 62,908.44 and 15,643

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Solution

The fourth proportional to 41,940.32, 62,908.44 and 15,643 is: 23,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,940.32 : 62,908.44 = 15,643 : x
  2. Step 2: Convert to fraction form
    41,940.32/62,908.44 = 15,643/x
  3. Step 3: Cross multiply
    41,940.32x = 62,908.44 × 15,643
  4. Step 4: Simplify right side
    41,940.32x = 984,076,726.92
  5. Step 5: Solve for x
    x = 984,076,726.92/41,940.32
  6. Step 6: Final answer
    x = 23,463.74

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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.