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Finding the Fourth Proportional to 70,081.44, 105,059.64 and 25,697.85

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Solution

The fourth proportional to 70,081.44, 105,059.64 and 25,697.85 is: 38,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,081.44 : 105,059.64 = 25,697.85 : x
  2. Step 2: Convert to fraction form
    70,081.44/105,059.64 = 25,697.85/x
  3. Step 3: Cross multiply
    70,081.44x = 105,059.64 × 25,697.85
  4. Step 4: Simplify right side
    70,081.44x = 2,699,806,869.77
  5. Step 5: Solve for x
    x = 2,699,806,869.77/70,081.44
  6. Step 6: Final answer
    x = 38,523.85

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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.