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Finding the Fourth Proportional to 2,940.68, 4,406.16 and 1,967.06

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Solution

The fourth proportional to 2,940.68, 4,406.16 and 1,967.06 is: 2,947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.68 : 4,406.16 = 1,967.06 : x
  2. Step 2: Convert to fraction form
    2,940.68/4,406.16 = 1,967.06/x
  3. Step 3: Cross multiply
    2,940.68x = 4,406.16 × 1,967.06
  4. Step 4: Simplify right side
    2,940.68x = 8,667,181.09
  5. Step 5: Solve for x
    x = 8,667,181.09/2,940.68
  6. Step 6: Final answer
    x = 2,947.34

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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.