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Finding the Fourth Proportional to 5,559.94, 7,672.12 and 3,321

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Solution

The fourth proportional to 5,559.94, 7,672.12 and 3,321 is: 4,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,559.94 : 7,672.12 = 3,321 : x
  2. Step 2: Convert to fraction form
    5,559.94/7,672.12 = 3,321/x
  3. Step 3: Cross multiply
    5,559.94x = 7,672.12 × 3,321
  4. Step 4: Simplify right side
    5,559.94x = 25,479,102.22
  5. Step 5: Solve for x
    x = 25,479,102.22/5,559.94
  6. Step 6: Final answer
    x = 4,582.62

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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.