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Finding the Fourth Proportional to 5,806.69, 8,711.55 and 1,911.09

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Solution

The fourth proportional to 5,806.69, 8,711.55 and 1,911.09 is: 2,867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,806.69 : 8,711.55 = 1,911.09 : x
  2. Step 2: Convert to fraction form
    5,806.69/8,711.55 = 1,911.09/x
  3. Step 3: Cross multiply
    5,806.69x = 8,711.55 × 1,911.09
  4. Step 4: Simplify right side
    5,806.69x = 16,648,588.76
  5. Step 5: Solve for x
    x = 16,648,588.76/5,806.69
  6. Step 6: Final answer
    x = 2,867.14

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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.