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Finding the Fourth Proportional to 22,375.92, 30,879.54 and 12,304.74

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Solution

The fourth proportional to 22,375.92, 30,879.54 and 12,304.74 is: 16,980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.92 : 30,879.54 = 12,304.74 : x
  2. Step 2: Convert to fraction form
    22,375.92/30,879.54 = 12,304.74/x
  3. Step 3: Cross multiply
    22,375.92x = 30,879.54 × 12,304.74
  4. Step 4: Simplify right side
    22,375.92x = 379,964,711.02
  5. Step 5: Solve for x
    x = 379,964,711.02/22,375.92
  6. Step 6: Final answer
    x = 16,980.96

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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.