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Finding the Fourth Proportional to 28,315.36, 42,474.66 and 8,594.56

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Solution

The fourth proportional to 28,315.36, 42,474.66 and 8,594.56 is: 12,892.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.36 : 42,474.66 = 8,594.56 : x
  2. Step 2: Convert to fraction form
    28,315.36/42,474.66 = 8,594.56/x
  3. Step 3: Cross multiply
    28,315.36x = 42,474.66 × 8,594.56
  4. Step 4: Simplify right side
    28,315.36x = 365,051,013.85
  5. Step 5: Solve for x
    x = 365,051,013.85/28,315.36
  6. Step 6: Final answer
    x = 12,892.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.