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Finding the Fourth Proportional to 18,485.46, 27,728.19 and 4,634.46

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Solution

The fourth proportional to 18,485.46, 27,728.19 and 4,634.46 is: 6,951.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.46 : 27,728.19 = 4,634.46 : x
  2. Step 2: Convert to fraction form
    18,485.46/27,728.19 = 4,634.46/x
  3. Step 3: Cross multiply
    18,485.46x = 27,728.19 × 4,634.46
  4. Step 4: Simplify right side
    18,485.46x = 128,505,187.43
  5. Step 5: Solve for x
    x = 128,505,187.43/18,485.46
  6. Step 6: Final answer
    x = 6,951.69

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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.