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Finding the Fourth Proportional to 3,558.22, 5,337.32 and 961.16

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Solution

The fourth proportional to 3,558.22, 5,337.32 and 961.16 is: 1,441.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.22 : 5,337.32 = 961.16 : x
  2. Step 2: Convert to fraction form
    3,558.22/5,337.32 = 961.16/x
  3. Step 3: Cross multiply
    3,558.22x = 5,337.32 × 961.16
  4. Step 4: Simplify right side
    3,558.22x = 5,130,002.75
  5. Step 5: Solve for x
    x = 5,130,002.75/3,558.22
  6. Step 6: Final answer
    x = 1,441.73

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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.