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Finding the Fourth Proportional to 19,956.16, 29,934.24 and 8,111.13

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Solution

The fourth proportional to 19,956.16, 29,934.24 and 8,111.13 is: 12,166.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.16 : 29,934.24 = 8,111.13 : x
  2. Step 2: Convert to fraction form
    19,956.16/29,934.24 = 8,111.13/x
  3. Step 3: Cross multiply
    19,956.16x = 29,934.24 × 8,111.13
  4. Step 4: Simplify right side
    19,956.16x = 242,800,512.09
  5. Step 5: Solve for x
    x = 242,800,512.09/19,956.16
  6. Step 6: Final answer
    x = 12,166.70

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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.