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Finding the Fourth Proportional to 28,559.80, 42,844.26 and 8,833.72

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Solution

The fourth proportional to 28,559.80, 42,844.26 and 8,833.72 is: 13,251.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.80 : 42,844.26 = 8,833.72 : x
  2. Step 2: Convert to fraction form
    28,559.80/42,844.26 = 8,833.72/x
  3. Step 3: Cross multiply
    28,559.80x = 42,844.26 × 8,833.72
  4. Step 4: Simplify right side
    28,559.80x = 378,474,196.45
  5. Step 5: Solve for x
    x = 378,474,196.45/28,559.80
  6. Step 6: Final answer
    x = 13,251.99

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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.