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Finding the Fourth Proportional to 28,231.09, 42,602.83 and 27,289.99

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Solution

The fourth proportional to 28,231.09, 42,602.83 and 27,289.99 is: 41,182.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.09 : 42,602.83 = 27,289.99 : x
  2. Step 2: Convert to fraction form
    28,231.09/42,602.83 = 27,289.99/x
  3. Step 3: Cross multiply
    28,231.09x = 42,602.83 × 27,289.99
  4. Step 4: Simplify right side
    28,231.09x = 1,162,630,804.67
  5. Step 5: Solve for x
    x = 1,162,630,804.67/28,231.09
  6. Step 6: Final answer
    x = 41,182.64

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.