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Finding the Fourth Proportional to 69,764.40, 104,581.80 and 48,704.40

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Solution

The fourth proportional to 69,764.40, 104,581.80 and 48,704.40 is: 73,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,764.40 : 104,581.80 = 48,704.40 : x
  2. Step 2: Convert to fraction form
    69,764.40/104,581.80 = 48,704.40/x
  3. Step 3: Cross multiply
    69,764.40x = 104,581.80 × 48,704.40
  4. Step 4: Simplify right side
    69,764.40x = 5,093,593,819.92
  5. Step 5: Solve for x
    x = 5,093,593,819.92/69,764.40
  6. Step 6: Final answer
    x = 73,011.36

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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.