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Finding the Fourth Proportional to 11,600.64, 17,400.96 and 3,392

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Solution

The fourth proportional to 11,600.64, 17,400.96 and 3,392 is: 5,088

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,600.64 : 17,400.96 = 3,392 : x
  2. Step 2: Convert to fraction form
    11,600.64/17,400.96 = 3,392/x
  3. Step 3: Cross multiply
    11,600.64x = 17,400.96 × 3,392
  4. Step 4: Simplify right side
    11,600.64x = 59,024,056.32
  5. Step 5: Solve for x
    x = 59,024,056.32/11,600.64
  6. Step 6: Final answer
    x = 5,088

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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.