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Finding the Fourth Proportional to 22,993.99, 31,731.99 and 13,919.23

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Solution

The fourth proportional to 22,993.99, 31,731.99 and 13,919.23 is: 19,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,993.99 : 31,731.99 = 13,919.23 : x
  2. Step 2: Convert to fraction form
    22,993.99/31,731.99 = 13,919.23/x
  3. Step 3: Cross multiply
    22,993.99x = 31,731.99 × 13,919.23
  4. Step 4: Simplify right side
    22,993.99x = 441,684,867.17
  5. Step 5: Solve for x
    x = 441,684,867.17/22,993.99
  6. Step 6: Final answer
    x = 19,208.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.