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Finding the Fourth Proportional to 80,163,048.30, 120,244,572.45 and 80,163,048.30

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Solution

The fourth proportional to 80,163,048.30, 120,244,572.45 and 80,163,048.30 is: 120,244,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,163,048.30 : 120,244,572.45 = 80,163,048.30 : x
  2. Step 2: Convert to fraction form
    80,163,048.30/120,244,572.45 = 80,163,048.30/x
  3. Step 3: Cross multiply
    80,163,048.30x = 120,244,572.45 × 80,163,048.30
  4. Step 4: Simplify right side
    80,163,048.30x = 9,639,171,469,122,200
  5. Step 5: Solve for x
    x = 9,639,171,469,122,200/80,163,048.30
  6. Step 6: Final answer
    x = 120,244,572.45

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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.