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Finding the Fourth Proportional to 11,166.78, 16,752.75 and 4,928.56

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Solution

The fourth proportional to 11,166.78, 16,752.75 and 4,928.56 is: 7,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,166.78 : 16,752.75 = 4,928.56 : x
  2. Step 2: Convert to fraction form
    11,166.78/16,752.75 = 4,928.56/x
  3. Step 3: Cross multiply
    11,166.78x = 16,752.75 × 4,928.56
  4. Step 4: Simplify right side
    11,166.78x = 82,566,933.54
  5. Step 5: Solve for x
    x = 82,566,933.54/11,166.78
  6. Step 6: Final answer
    x = 7,393.98

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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.