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Finding the Fourth Proportional to 2,465.92, 3,696.67 and 905.56

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Solution

The fourth proportional to 2,465.92, 3,696.67 and 905.56 is: 1,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,465.92 : 3,696.67 = 905.56 : x
  2. Step 2: Convert to fraction form
    2,465.92/3,696.67 = 905.56/x
  3. Step 3: Cross multiply
    2,465.92x = 3,696.67 × 905.56
  4. Step 4: Simplify right side
    2,465.92x = 3,347,558.75
  5. Step 5: Solve for x
    x = 3,347,558.75/2,465.92
  6. Step 6: Final answer
    x = 1,357.53

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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.