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Finding the Fourth Proportional to 16,636.30, 24,964.42 and 6,639.28

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Solution

The fourth proportional to 16,636.30, 24,964.42 and 6,639.28 is: 9,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,636.30 : 24,964.42 = 6,639.28 : x
  2. Step 2: Convert to fraction form
    16,636.30/24,964.42 = 6,639.28/x
  3. Step 3: Cross multiply
    16,636.30x = 24,964.42 × 6,639.28
  4. Step 4: Simplify right side
    16,636.30x = 165,745,774.42
  5. Step 5: Solve for x
    x = 165,745,774.42/16,636.30
  6. Step 6: Final answer
    x = 9,962.90

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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.