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Finding the Fourth Proportional to 4,928.60, 7,391.60 and 2,461.60

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Solution

The fourth proportional to 4,928.60, 7,391.60 and 2,461.60 is: 3,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.60 : 7,391.60 = 2,461.60 : x
  2. Step 2: Convert to fraction form
    4,928.60/7,391.60 = 2,461.60/x
  3. Step 3: Cross multiply
    4,928.60x = 7,391.60 × 2,461.60
  4. Step 4: Simplify right side
    4,928.60x = 18,195,162.56
  5. Step 5: Solve for x
    x = 18,195,162.56/4,928.60
  6. Step 6: Final answer
    x = 3,691.75

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1.5x scale

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.