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Finding the Fourth Proportional to 8,612.99, 12,922.83 and 6,962.48

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Solution

The fourth proportional to 8,612.99, 12,922.83 and 6,962.48 is: 10,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.99 : 12,922.83 = 6,962.48 : x
  2. Step 2: Convert to fraction form
    8,612.99/12,922.83 = 6,962.48/x
  3. Step 3: Cross multiply
    8,612.99x = 12,922.83 × 6,962.48
  4. Step 4: Simplify right side
    8,612.99x = 89,974,977.73
  5. Step 5: Solve for x
    x = 89,974,977.73/8,612.99
  6. Step 6: Final answer
    x = 10,446.43

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1.5x scale

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.