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Finding the Fourth Proportional to 4,988.68, 7,467 and 3,318.92

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Solution

The fourth proportional to 4,988.68, 7,467 and 3,318.92 is: 4,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.68 : 7,467 = 3,318.92 : x
  2. Step 2: Convert to fraction form
    4,988.68/7,467 = 3,318.92/x
  3. Step 3: Cross multiply
    4,988.68x = 7,467 × 3,318.92
  4. Step 4: Simplify right side
    4,988.68x = 24,782,375.64
  5. Step 5: Solve for x
    x = 24,782,375.64/4,988.68
  6. Step 6: Final answer
    x = 4,967.72

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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.