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Finding the Fourth Proportional to 19,361.31, 29,024.76 and 6,879.69

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Solution

The fourth proportional to 19,361.31, 29,024.76 and 6,879.69 is: 10,313.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.31 : 29,024.76 = 6,879.69 : x
  2. Step 2: Convert to fraction form
    19,361.31/29,024.76 = 6,879.69/x
  3. Step 3: Cross multiply
    19,361.31x = 29,024.76 × 6,879.69
  4. Step 4: Simplify right side
    19,361.31x = 199,681,351.12
  5. Step 5: Solve for x
    x = 199,681,351.12/19,361.31
  6. Step 6: Final answer
    x = 10,313.42

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1.5x scale

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.