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Finding the Fourth Proportional to 11,356.54, 15,667.66 and 8,379.47

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Solution

The fourth proportional to 11,356.54, 15,667.66 and 8,379.47 is: 11,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.54 : 15,667.66 = 8,379.47 : x
  2. Step 2: Convert to fraction form
    11,356.54/15,667.66 = 8,379.47/x
  3. Step 3: Cross multiply
    11,356.54x = 15,667.66 × 8,379.47
  4. Step 4: Simplify right side
    11,356.54x = 131,286,686.94
  5. Step 5: Solve for x
    x = 131,286,686.94/11,356.54
  6. Step 6: Final answer
    x = 11,560.45

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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.