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Finding the Fourth Proportional to 5,760.80, 8,626.80 and 4,608.80

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Solution

The fourth proportional to 5,760.80, 8,626.80 and 4,608.80 is: 6,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.80 : 8,626.80 = 4,608.80 : x
  2. Step 2: Convert to fraction form
    5,760.80/8,626.80 = 4,608.80/x
  3. Step 3: Cross multiply
    5,760.80x = 8,626.80 × 4,608.80
  4. Step 4: Simplify right side
    5,760.80x = 39,759,195.84
  5. Step 5: Solve for x
    x = 39,759,195.84/5,760.80
  6. Step 6: Final answer
    x = 6,901.68

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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.