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Finding the Fourth Proportional to 8,548.70, 12,831.15 and 5,268.20

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Solution

The fourth proportional to 8,548.70, 12,831.15 and 5,268.20 is: 7,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.70 : 12,831.15 = 5,268.20 : x
  2. Step 2: Convert to fraction form
    8,548.70/12,831.15 = 5,268.20/x
  3. Step 3: Cross multiply
    8,548.70x = 12,831.15 × 5,268.20
  4. Step 4: Simplify right side
    8,548.70x = 67,597,064.43
  5. Step 5: Solve for x
    x = 67,597,064.43/8,548.70
  6. Step 6: Final answer
    x = 7,907.29

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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.