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Finding the Fourth Proportional to 14,990,143.20, 20,686,540.08 and 8,795,295.20

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Solution

The fourth proportional to 14,990,143.20, 20,686,540.08 and 8,795,295.20 is: 12,137,590.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990,143.20 : 20,686,540.08 = 8,795,295.20 : x
  2. Step 2: Convert to fraction form
    14,990,143.20/20,686,540.08 = 8,795,295.20/x
  3. Step 3: Cross multiply
    14,990,143.20x = 20,686,540.08 × 8,795,295.20
  4. Step 4: Simplify right side
    14,990,143.20x = 181,944,226,670,231.59
  5. Step 5: Solve for x
    x = 181,944,226,670,231.59/14,990,143.20
  6. Step 6: Final answer
    x = 12,137,590.97

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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.