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Finding the Fourth Proportional to 5,530.52, 7,621.62 and 3,955.88

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Solution

The fourth proportional to 5,530.52, 7,621.62 and 3,955.88 is: 5,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,530.52 : 7,621.62 = 3,955.88 : x
  2. Step 2: Convert to fraction form
    5,530.52/7,621.62 = 3,955.88/x
  3. Step 3: Cross multiply
    5,530.52x = 7,621.62 × 3,955.88
  4. Step 4: Simplify right side
    5,530.52x = 30,150,214.13
  5. Step 5: Solve for x
    x = 30,150,214.13/5,530.52
  6. Step 6: Final answer
    x = 5,451.61

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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.