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Finding the Fourth Proportional to 16,528.40, 22,808.72 and 8,974.40

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Solution

The fourth proportional to 16,528.40, 22,808.72 and 8,974.40 is: 12,384.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,528.40 : 22,808.72 = 8,974.40 : x
  2. Step 2: Convert to fraction form
    16,528.40/22,808.72 = 8,974.40/x
  3. Step 3: Cross multiply
    16,528.40x = 22,808.72 × 8,974.40
  4. Step 4: Simplify right side
    16,528.40x = 204,694,576.77
  5. Step 5: Solve for x
    x = 204,694,576.77/16,528.40
  6. Step 6: Final answer
    x = 12,384.42

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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.