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Finding the Fourth Proportional to 1,863.86, 2,797.61 and 1,855.19

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Solution

The fourth proportional to 1,863.86, 2,797.61 and 1,855.19 is: 2,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.86 : 2,797.61 = 1,855.19 : x
  2. Step 2: Convert to fraction form
    1,863.86/2,797.61 = 1,855.19/x
  3. Step 3: Cross multiply
    1,863.86x = 2,797.61 × 1,855.19
  4. Step 4: Simplify right side
    1,863.86x = 5,190,095.81
  5. Step 5: Solve for x
    x = 5,190,095.81/1,863.86
  6. Step 6: Final answer
    x = 2,784.60

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1.5x scale

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.