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Finding the Fourth Proportional to 19,472.10, 29,205.99 and 5,621.10

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Solution

The fourth proportional to 19,472.10, 29,205.99 and 5,621.10 is: 8,431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.10 : 29,205.99 = 5,621.10 : x
  2. Step 2: Convert to fraction form
    19,472.10/29,205.99 = 5,621.10/x
  3. Step 3: Cross multiply
    19,472.10x = 29,205.99 × 5,621.10
  4. Step 4: Simplify right side
    19,472.10x = 164,169,790.39
  5. Step 5: Solve for x
    x = 164,169,790.39/19,472.10
  6. Step 6: Final answer
    x = 8,431.03

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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.