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Finding the Fourth Proportional to 2,274.64, 3,406.20 and 1,406.32

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Solution

The fourth proportional to 2,274.64, 3,406.20 and 1,406.32 is: 2,105.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.64 : 3,406.20 = 1,406.32 : x
  2. Step 2: Convert to fraction form
    2,274.64/3,406.20 = 1,406.32/x
  3. Step 3: Cross multiply
    2,274.64x = 3,406.20 × 1,406.32
  4. Step 4: Simplify right side
    2,274.64x = 4,790,207.18
  5. Step 5: Solve for x
    x = 4,790,207.18/2,274.64
  6. Step 6: Final answer
    x = 2,105.92

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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.