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Finding the Fourth Proportional to 68,939.32, 103,414.64 and 29,496.84

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Solution

The fourth proportional to 68,939.32, 103,414.64 and 29,496.84 is: 44,247.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,939.32 : 103,414.64 = 29,496.84 : x
  2. Step 2: Convert to fraction form
    68,939.32/103,414.64 = 29,496.84/x
  3. Step 3: Cross multiply
    68,939.32x = 103,414.64 × 29,496.84
  4. Step 4: Simplify right side
    68,939.32x = 3,050,405,089.74
  5. Step 5: Solve for x
    x = 3,050,405,089.74/68,939.32
  6. Step 6: Final answer
    x = 44,247.68

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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.