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Finding the Fourth Proportional to 5,859.88, 8,790.62 and 2,161.64

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Solution

The fourth proportional to 5,859.88, 8,790.62 and 2,161.64 is: 3,242.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.88 : 8,790.62 = 2,161.64 : x
  2. Step 2: Convert to fraction form
    5,859.88/8,790.62 = 2,161.64/x
  3. Step 3: Cross multiply
    5,859.88x = 8,790.62 × 2,161.64
  4. Step 4: Simplify right side
    5,859.88x = 19,002,155.82
  5. Step 5: Solve for x
    x = 19,002,155.82/5,859.88
  6. Step 6: Final answer
    x = 3,242.76

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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.