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Finding the Fourth Proportional to 28,993.11, 43,486.92 and 9,266.37

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Solution

The fourth proportional to 28,993.11, 43,486.92 and 9,266.37 is: 13,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.11 : 43,486.92 = 9,266.37 : x
  2. Step 2: Convert to fraction form
    28,993.11/43,486.92 = 9,266.37/x
  3. Step 3: Cross multiply
    28,993.11x = 43,486.92 × 9,266.37
  4. Step 4: Simplify right side
    28,993.11x = 402,965,890.88
  5. Step 5: Solve for x
    x = 402,965,890.88/28,993.11
  6. Step 6: Final answer
    x = 13,898.68

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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.