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Finding the Fourth Proportional to 7,907.36, 11,857.76 and 2,974.44

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Solution

The fourth proportional to 7,907.36, 11,857.76 and 2,974.44 is: 4,460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.36 : 11,857.76 = 2,974.44 : x
  2. Step 2: Convert to fraction form
    7,907.36/11,857.76 = 2,974.44/x
  3. Step 3: Cross multiply
    7,907.36x = 11,857.76 × 2,974.44
  4. Step 4: Simplify right side
    7,907.36x = 35,270,195.65
  5. Step 5: Solve for x
    x = 35,270,195.65/7,907.36
  6. Step 6: Final answer
    x = 4,460.43

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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.