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Finding the Fourth Proportional to 8,561.94, 11,806.14 and 5,572.26

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Solution

The fourth proportional to 8,561.94, 11,806.14 and 5,572.26 is: 7,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.94 : 11,806.14 = 5,572.26 : x
  2. Step 2: Convert to fraction form
    8,561.94/11,806.14 = 5,572.26/x
  3. Step 3: Cross multiply
    8,561.94x = 11,806.14 × 5,572.26
  4. Step 4: Simplify right side
    8,561.94x = 65,786,881.68
  5. Step 5: Solve for x
    x = 65,786,881.68/8,561.94
  6. Step 6: Final answer
    x = 7,683.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.