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Finding the Fourth Proportional to 15,930.92, 21,952.27 and 12,323.97

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Solution

The fourth proportional to 15,930.92, 21,952.27 and 12,323.97 is: 16,982.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.92 : 21,952.27 = 12,323.97 : x
  2. Step 2: Convert to fraction form
    15,930.92/21,952.27 = 12,323.97/x
  3. Step 3: Cross multiply
    15,930.92x = 21,952.27 × 12,323.97
  4. Step 4: Simplify right side
    15,930.92x = 270,539,086.10
  5. Step 5: Solve for x
    x = 270,539,086.10/15,930.92
  6. Step 6: Final answer
    x = 16,982.02

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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.