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Finding the Fourth Proportional to 8,328.10, 12,492 and 3,396.57

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Solution

The fourth proportional to 8,328.10, 12,492 and 3,396.57 is: 5,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.10 : 12,492 = 3,396.57 : x
  2. Step 2: Convert to fraction form
    8,328.10/12,492 = 3,396.57/x
  3. Step 3: Cross multiply
    8,328.10x = 12,492 × 3,396.57
  4. Step 4: Simplify right side
    8,328.10x = 42,429,952.44
  5. Step 5: Solve for x
    x = 42,429,952.44/8,328.10
  6. Step 6: Final answer
    x = 5,094.79

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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.