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Finding the Fourth Proportional to 8,891.67, 13,338.19 and 2,651.20

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Solution

The fourth proportional to 8,891.67, 13,338.19 and 2,651.20 is: 3,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.67 : 13,338.19 = 2,651.20 : x
  2. Step 2: Convert to fraction form
    8,891.67/13,338.19 = 2,651.20/x
  3. Step 3: Cross multiply
    8,891.67x = 13,338.19 × 2,651.20
  4. Step 4: Simplify right side
    8,891.67x = 35,362,209.33
  5. Step 5: Solve for x
    x = 35,362,209.33/8,891.67
  6. Step 6: Final answer
    x = 3,977.00

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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.