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Finding the Fourth Proportional to 28,896.60, 43,344.66 and 7,836.60

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Solution

The fourth proportional to 28,896.60, 43,344.66 and 7,836.60 is: 11,754.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,896.60 : 43,344.66 = 7,836.60 : x
  2. Step 2: Convert to fraction form
    28,896.60/43,344.66 = 7,836.60/x
  3. Step 3: Cross multiply
    28,896.60x = 43,344.66 × 7,836.60
  4. Step 4: Simplify right side
    28,896.60x = 339,674,762.56
  5. Step 5: Solve for x
    x = 339,674,762.56/28,896.60
  6. Step 6: Final answer
    x = 11,754.83

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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.