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Finding the Fourth Proportional to 4,860.74, 7,276.02 and 3,928.52

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Solution

The fourth proportional to 4,860.74, 7,276.02 and 3,928.52 is: 5,880.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860.74 : 7,276.02 = 3,928.52 : x
  2. Step 2: Convert to fraction form
    4,860.74/7,276.02 = 3,928.52/x
  3. Step 3: Cross multiply
    4,860.74x = 7,276.02 × 3,928.52
  4. Step 4: Simplify right side
    4,860.74x = 28,583,990.09
  5. Step 5: Solve for x
    x = 28,583,990.09/4,860.74
  6. Step 6: Final answer
    x = 5,880.58

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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.