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Finding the Fourth Proportional to 114,449.80, 171,815.10 and 72,329.80

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Solution

The fourth proportional to 114,449.80, 171,815.10 and 72,329.80 is: 108,583.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,449.80 : 171,815.10 = 72,329.80 : x
  2. Step 2: Convert to fraction form
    114,449.80/171,815.10 = 72,329.80/x
  3. Step 3: Cross multiply
    114,449.80x = 171,815.10 × 72,329.80
  4. Step 4: Simplify right side
    114,449.80x = 12,427,351,819.98
  5. Step 5: Solve for x
    x = 12,427,351,819.98/114,449.80
  6. Step 6: Final answer
    x = 108,583.43

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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.