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Finding the Fourth Proportional to 18,739.93, 28,101.90 and 10,847.89

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Solution

The fourth proportional to 18,739.93, 28,101.90 and 10,847.89 is: 16,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.93 : 28,101.90 = 10,847.89 : x
  2. Step 2: Convert to fraction form
    18,739.93/28,101.90 = 10,847.89/x
  3. Step 3: Cross multiply
    18,739.93x = 28,101.90 × 10,847.89
  4. Step 4: Simplify right side
    18,739.93x = 304,846,319.99
  5. Step 5: Solve for x
    x = 304,846,319.99/18,739.93
  6. Step 6: Final answer
    x = 16,267.21

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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.