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Finding the Fourth Proportional to 9,397.67, 12,996.99 and 8,216.69

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Solution

The fourth proportional to 9,397.67, 12,996.99 and 8,216.69 is: 11,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,397.67 : 12,996.99 = 8,216.69 : x
  2. Step 2: Convert to fraction form
    9,397.67/12,996.99 = 8,216.69/x
  3. Step 3: Cross multiply
    9,397.67x = 12,996.99 × 8,216.69
  4. Step 4: Simplify right side
    9,397.67x = 106,792,172.78
  5. Step 5: Solve for x
    x = 106,792,172.78/9,397.67
  6. Step 6: Final answer
    x = 11,363.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.