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Finding the Fourth Proportional to 5,561.70, 8,330.40 and 4,946.10

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Solution

The fourth proportional to 5,561.70, 8,330.40 and 4,946.10 is: 7,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,561.70 : 8,330.40 = 4,946.10 : x
  2. Step 2: Convert to fraction form
    5,561.70/8,330.40 = 4,946.10/x
  3. Step 3: Cross multiply
    5,561.70x = 8,330.40 × 4,946.10
  4. Step 4: Simplify right side
    5,561.70x = 41,202,991.44
  5. Step 5: Solve for x
    x = 41,202,991.44/5,561.70
  6. Step 6: Final answer
    x = 7,408.34

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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.