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Finding the Fourth Proportional to 70,093.44, 105,246.90 and 67,821.75

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Solution

The fourth proportional to 70,093.44, 105,246.90 and 67,821.75 is: 101,835.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,093.44 : 105,246.90 = 67,821.75 : x
  2. Step 2: Convert to fraction form
    70,093.44/105,246.90 = 67,821.75/x
  3. Step 3: Cross multiply
    70,093.44x = 105,246.90 × 67,821.75
  4. Step 4: Simplify right side
    70,093.44x = 7,138,028,940.08
  5. Step 5: Solve for x
    x = 7,138,028,940.08/70,093.44
  6. Step 6: Final answer
    x = 101,835.91

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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.