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Finding the Fourth Proportional to 6,608.61, 9,913.92 and 2,225.72

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Solution

The fourth proportional to 6,608.61, 9,913.92 and 2,225.72 is: 3,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.61 : 9,913.92 = 2,225.72 : x
  2. Step 2: Convert to fraction form
    6,608.61/9,913.92 = 2,225.72/x
  3. Step 3: Cross multiply
    6,608.61x = 9,913.92 × 2,225.72
  4. Step 4: Simplify right side
    6,608.61x = 22,065,560.45
  5. Step 5: Solve for x
    x = 22,065,560.45/6,608.61
  6. Step 6: Final answer
    x = 3,338.91

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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.