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Finding the Fourth Proportional to 13,566.92, 18,735.18 and 8,862.44

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Solution

The fourth proportional to 13,566.92, 18,735.18 and 8,862.44 is: 12,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.92 : 18,735.18 = 8,862.44 : x
  2. Step 2: Convert to fraction form
    13,566.92/18,735.18 = 8,862.44/x
  3. Step 3: Cross multiply
    13,566.92x = 18,735.18 × 8,862.44
  4. Step 4: Simplify right side
    13,566.92x = 166,039,408.64
  5. Step 5: Solve for x
    x = 166,039,408.64/13,566.92
  6. Step 6: Final answer
    x = 12,238.55

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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.