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Finding the Fourth Proportional to 16,435.40, 22,680.66 and 8,983.40

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Solution

The fourth proportional to 16,435.40, 22,680.66 and 8,983.40 is: 12,396.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,435.40 : 22,680.66 = 8,983.40 : x
  2. Step 2: Convert to fraction form
    16,435.40/22,680.66 = 8,983.40/x
  3. Step 3: Cross multiply
    16,435.40x = 22,680.66 × 8,983.40
  4. Step 4: Simplify right side
    16,435.40x = 203,749,441.04
  5. Step 5: Solve for x
    x = 203,749,441.04/16,435.40
  6. Step 6: Final answer
    x = 12,396.99

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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.