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Finding the Fourth Proportional to 27,448.70, 37,879.95 and 15,511.76

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Solution

The fourth proportional to 27,448.70, 37,879.95 and 15,511.76 is: 21,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,448.70 : 37,879.95 = 15,511.76 : x
  2. Step 2: Convert to fraction form
    27,448.70/37,879.95 = 15,511.76/x
  3. Step 3: Cross multiply
    27,448.70x = 37,879.95 × 15,511.76
  4. Step 4: Simplify right side
    27,448.70x = 587,584,693.21
  5. Step 5: Solve for x
    x = 587,584,693.21/27,448.70
  6. Step 6: Final answer
    x = 21,406.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.