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Finding the Fourth Proportional to 5,917.20, 8,169.20 and 5,261.04

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Solution

The fourth proportional to 5,917.20, 8,169.20 and 5,261.04 is: 7,263.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,917.20 : 8,169.20 = 5,261.04 : x
  2. Step 2: Convert to fraction form
    5,917.20/8,169.20 = 5,261.04/x
  3. Step 3: Cross multiply
    5,917.20x = 8,169.20 × 5,261.04
  4. Step 4: Simplify right side
    5,917.20x = 42,978,487.97
  5. Step 5: Solve for x
    x = 42,978,487.97/5,917.20
  6. Step 6: Final answer
    x = 7,263.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.