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Finding the Fourth Proportional to 2,960.80, 4,152.80 and 2,960.80

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Solution

The fourth proportional to 2,960.80, 4,152.80 and 2,960.80 is: 4,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.80 : 4,152.80 = 2,960.80 : x
  2. Step 2: Convert to fraction form
    2,960.80/4,152.80 = 2,960.80/x
  3. Step 3: Cross multiply
    2,960.80x = 4,152.80 × 2,960.80
  4. Step 4: Simplify right side
    2,960.80x = 12,295,610.24
  5. Step 5: Solve for x
    x = 12,295,610.24/2,960.80
  6. Step 6: Final answer
    x = 4,152.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.