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Finding the Fourth Proportional to 7,762.89, 11,649.11 and 3,082.08

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Solution

The fourth proportional to 7,762.89, 11,649.11 and 3,082.08 is: 4,625.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.89 : 11,649.11 = 3,082.08 : x
  2. Step 2: Convert to fraction form
    7,762.89/11,649.11 = 3,082.08/x
  3. Step 3: Cross multiply
    7,762.89x = 11,649.11 × 3,082.08
  4. Step 4: Simplify right side
    7,762.89x = 35,903,473.54
  5. Step 5: Solve for x
    x = 35,903,473.54/7,762.89
  6. Step 6: Final answer
    x = 4,625.01

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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.