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Finding the Fourth Proportional to 69,366.80, 103,819.80 and 48,630.80

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Solution

The fourth proportional to 69,366.80, 103,819.80 and 48,630.80 is: 72,784.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,366.80 : 103,819.80 = 48,630.80 : x
  2. Step 2: Convert to fraction form
    69,366.80/103,819.80 = 48,630.80/x
  3. Step 3: Cross multiply
    69,366.80x = 103,819.80 × 48,630.80
  4. Step 4: Simplify right side
    69,366.80x = 5,048,839,929.84
  5. Step 5: Solve for x
    x = 5,048,839,929.84/69,366.80
  6. Step 6: Final answer
    x = 72,784.67

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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.