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Finding the Fourth Proportional to 18,792,115.80, 28,188,173.70 and 11,233,843.80

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Solution

The fourth proportional to 18,792,115.80, 28,188,173.70 and 11,233,843.80 is: 16,850,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792,115.80 : 28,188,173.70 = 11,233,843.80 : x
  2. Step 2: Convert to fraction form
    18,792,115.80/28,188,173.70 = 11,233,843.80/x
  3. Step 3: Cross multiply
    18,792,115.80x = 28,188,173.70 × 11,233,843.80
  4. Step 4: Simplify right side
    18,792,115.80x = 316,661,540,353,068.06
  5. Step 5: Solve for x
    x = 316,661,540,353,068.06/18,792,115.80
  6. Step 6: Final answer
    x = 16,850,765.70

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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.