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Finding the Fourth Proportional to 271,704.10, 407,574.15 and 72,021.70

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Solution

The fourth proportional to 271,704.10, 407,574.15 and 72,021.70 is: 108,037.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,704.10 : 407,574.15 = 72,021.70 : x
  2. Step 2: Convert to fraction form
    271,704.10/407,574.15 = 72,021.70/x
  3. Step 3: Cross multiply
    271,704.10x = 407,574.15 × 72,021.70
  4. Step 4: Simplify right side
    271,704.10x = 29,354,183,159.06
  5. Step 5: Solve for x
    x = 29,354,183,159.06/271,704.10
  6. Step 6: Final answer
    x = 108,037.32

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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.