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Finding the Fourth Proportional to 7,479.54, 11,131.03 and 7,230.39

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Solution

The fourth proportional to 7,479.54, 11,131.03 and 7,230.39 is: 10,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.54 : 11,131.03 = 7,230.39 : x
  2. Step 2: Convert to fraction form
    7,479.54/11,131.03 = 7,230.39/x
  3. Step 3: Cross multiply
    7,479.54x = 11,131.03 × 7,230.39
  4. Step 4: Simplify right side
    7,479.54x = 80,481,688.00
  5. Step 5: Solve for x
    x = 80,481,688.00/7,479.54
  6. Step 6: Final answer
    x = 10,760.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.