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Finding the Fourth Proportional to 18,998.61, 28,495.44 and 5,850.69

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Solution

The fourth proportional to 18,998.61, 28,495.44 and 5,850.69 is: 8,775.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.61 : 28,495.44 = 5,850.69 : x
  2. Step 2: Convert to fraction form
    18,998.61/28,495.44 = 5,850.69/x
  3. Step 3: Cross multiply
    18,998.61x = 28,495.44 × 5,850.69
  4. Step 4: Simplify right side
    18,998.61x = 166,717,985.85
  5. Step 5: Solve for x
    x = 166,717,985.85/18,998.61
  6. Step 6: Final answer
    x = 8,775.27

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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.