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Finding the Fourth Proportional to 8,048.40, 12,040.20 and 6,964.80

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Solution

The fourth proportional to 8,048.40, 12,040.20 and 6,964.80 is: 10,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,048.40 : 12,040.20 = 6,964.80 : x
  2. Step 2: Convert to fraction form
    8,048.40/12,040.20 = 6,964.80/x
  3. Step 3: Cross multiply
    8,048.40x = 12,040.20 × 6,964.80
  4. Step 4: Simplify right side
    8,048.40x = 83,857,584.96
  5. Step 5: Solve for x
    x = 83,857,584.96/8,048.40
  6. Step 6: Final answer
    x = 10,419.16

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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.