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Finding the Fourth Proportional to 13,251.44, 19,879.68 and 4,484

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Solution

The fourth proportional to 13,251.44, 19,879.68 and 4,484 is: 6,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.44 : 19,879.68 = 4,484 : x
  2. Step 2: Convert to fraction form
    13,251.44/19,879.68 = 4,484/x
  3. Step 3: Cross multiply
    13,251.44x = 19,879.68 × 4,484
  4. Step 4: Simplify right side
    13,251.44x = 89,140,485.12
  5. Step 5: Solve for x
    x = 89,140,485.12/13,251.44
  6. Step 6: Final answer
    x = 6,726.85

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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.