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Finding the Fourth Proportional to 12,453.88, 18,680.16 and 4,662.10

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Solution

The fourth proportional to 12,453.88, 18,680.16 and 4,662.10 is: 6,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.88 : 18,680.16 = 4,662.10 : x
  2. Step 2: Convert to fraction form
    12,453.88/18,680.16 = 4,662.10/x
  3. Step 3: Cross multiply
    12,453.88x = 18,680.16 × 4,662.10
  4. Step 4: Simplify right side
    12,453.88x = 87,088,773.94
  5. Step 5: Solve for x
    x = 87,088,773.94/12,453.88
  6. Step 6: Final answer
    x = 6,992.90

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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.