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Finding the Fourth Proportional to 1,169.93, 1,756.58 and 683.25

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Solution

The fourth proportional to 1,169.93, 1,756.58 and 683.25 is: 1,025.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.93 : 1,756.58 = 683.25 : x
  2. Step 2: Convert to fraction form
    1,169.93/1,756.58 = 683.25/x
  3. Step 3: Cross multiply
    1,169.93x = 1,756.58 × 683.25
  4. Step 4: Simplify right side
    1,169.93x = 1,200,179.87
  5. Step 5: Solve for x
    x = 1,200,179.87/1,169.93
  6. Step 6: Final answer
    x = 1,025.86

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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.