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Finding the Fourth Proportional to 10,911.11, 16,362 and 5,360.99

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Solution

The fourth proportional to 10,911.11, 16,362 and 5,360.99 is: 8,039.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.11 : 16,362 = 5,360.99 : x
  2. Step 2: Convert to fraction form
    10,911.11/16,362 = 5,360.99/x
  3. Step 3: Cross multiply
    10,911.11x = 16,362 × 5,360.99
  4. Step 4: Simplify right side
    10,911.11x = 87,716,436.57
  5. Step 5: Solve for x
    x = 87,716,436.57/10,911.11
  6. Step 6: Final answer
    x = 8,039.19

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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.