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Finding the Fourth Proportional to 22,910.48, 31,616.48 and 12,974.48

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Solution

The fourth proportional to 22,910.48, 31,616.48 and 12,974.48 is: 17,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,910.48 : 31,616.48 = 12,974.48 : x
  2. Step 2: Convert to fraction form
    22,910.48/31,616.48 = 12,974.48/x
  3. Step 3: Cross multiply
    22,910.48x = 31,616.48 × 12,974.48
  4. Step 4: Simplify right side
    22,910.48x = 410,207,387.43
  5. Step 5: Solve for x
    x = 410,207,387.43/22,910.48
  6. Step 6: Final answer
    x = 17,904.79

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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.