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Finding the Fourth Proportional to 6,607.36, 9,908.96 and 2,164

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Solution

The fourth proportional to 6,607.36, 9,908.96 and 2,164 is: 3,245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,607.36 : 9,908.96 = 2,164 : x
  2. Step 2: Convert to fraction form
    6,607.36/9,908.96 = 2,164/x
  3. Step 3: Cross multiply
    6,607.36x = 9,908.96 × 2,164
  4. Step 4: Simplify right side
    6,607.36x = 21,442,989.44
  5. Step 5: Solve for x
    x = 21,442,989.44/6,607.36
  6. Step 6: Final answer
    x = 3,245.32

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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.