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Finding the Fourth Proportional to 12,013.91, 16,579.94 and 6,636.32

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Solution

The fourth proportional to 12,013.91, 16,579.94 and 6,636.32 is: 9,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.91 : 16,579.94 = 6,636.32 : x
  2. Step 2: Convert to fraction form
    12,013.91/16,579.94 = 6,636.32/x
  3. Step 3: Cross multiply
    12,013.91x = 16,579.94 × 6,636.32
  4. Step 4: Simplify right side
    12,013.91x = 110,029,795.69
  5. Step 5: Solve for x
    x = 110,029,795.69/12,013.91
  6. Step 6: Final answer
    x = 9,158.53

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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.