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Finding the Fourth Proportional to 5,166.48, 7,129.59 and 2,928.56

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Solution

The fourth proportional to 5,166.48, 7,129.59 and 2,928.56 is: 4,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.48 : 7,129.59 = 2,928.56 : x
  2. Step 2: Convert to fraction form
    5,166.48/7,129.59 = 2,928.56/x
  3. Step 3: Cross multiply
    5,166.48x = 7,129.59 × 2,928.56
  4. Step 4: Simplify right side
    5,166.48x = 20,879,432.09
  5. Step 5: Solve for x
    x = 20,879,432.09/5,166.48
  6. Step 6: Final answer
    x = 4,041.33

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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.