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Finding the Fourth Proportional to 68,807.10, 103,216.43 and 29,364.56

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Solution

The fourth proportional to 68,807.10, 103,216.43 and 29,364.56 is: 44,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,807.10 : 103,216.43 = 29,364.56 : x
  2. Step 2: Convert to fraction form
    68,807.10/103,216.43 = 29,364.56/x
  3. Step 3: Cross multiply
    68,807.10x = 103,216.43 × 29,364.56
  4. Step 4: Simplify right side
    68,807.10x = 3,030,904,388.82
  5. Step 5: Solve for x
    x = 3,030,904,388.82/68,807.10
  6. Step 6: Final answer
    x = 44,049.30

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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.