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Finding the Fourth Proportional to 5,808.93, 8,712.17 and 1,911.21

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Solution

The fourth proportional to 5,808.93, 8,712.17 and 1,911.21 is: 2,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.93 : 8,712.17 = 1,911.21 : x
  2. Step 2: Convert to fraction form
    5,808.93/8,712.17 = 1,911.21/x
  3. Step 3: Cross multiply
    5,808.93x = 8,712.17 × 1,911.21
  4. Step 4: Simplify right side
    5,808.93x = 16,650,786.43
  5. Step 5: Solve for x
    x = 16,650,786.43/5,808.93
  6. Step 6: Final answer
    x = 2,866.41

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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.