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Finding the Fourth Proportional to 2,405.93, 3,318.81 and 1,411.01

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Solution

The fourth proportional to 2,405.93, 3,318.81 and 1,411.01 is: 1,946.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.93 : 3,318.81 = 1,411.01 : x
  2. Step 2: Convert to fraction form
    2,405.93/3,318.81 = 1,411.01/x
  3. Step 3: Cross multiply
    2,405.93x = 3,318.81 × 1,411.01
  4. Step 4: Simplify right side
    2,405.93x = 4,682,857.50
  5. Step 5: Solve for x
    x = 4,682,857.50/2,405.93
  6. Step 6: Final answer
    x = 1,946.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.