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Finding the Fourth Proportional to 2,322.96, 3,485.79 and 936.42

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Solution

The fourth proportional to 2,322.96, 3,485.79 and 936.42 is: 1,405.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,322.96 : 3,485.79 = 936.42 : x
  2. Step 2: Convert to fraction form
    2,322.96/3,485.79 = 936.42/x
  3. Step 3: Cross multiply
    2,322.96x = 3,485.79 × 936.42
  4. Step 4: Simplify right side
    2,322.96x = 3,264,141.36
  5. Step 5: Solve for x
    x = 3,264,141.36/2,322.96
  6. Step 6: Final answer
    x = 1,405.17

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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.