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Finding the Fourth Proportional to 7,922.10, 11,879.12 and 2,924.22

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Solution

The fourth proportional to 7,922.10, 11,879.12 and 2,924.22 is: 4,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.10 : 11,879.12 = 2,924.22 : x
  2. Step 2: Convert to fraction form
    7,922.10/11,879.12 = 2,924.22/x
  3. Step 3: Cross multiply
    7,922.10x = 11,879.12 × 2,924.22
  4. Step 4: Simplify right side
    7,922.10x = 34,737,160.29
  5. Step 5: Solve for x
    x = 34,737,160.29/7,922.10
  6. Step 6: Final answer
    x = 4,384.84

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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.