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Finding the Fourth Proportional to 18,596.72, 25,652.76 and 11,140.40

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Solution

The fourth proportional to 18,596.72, 25,652.76 and 11,140.40 is: 15,367.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,596.72 : 25,652.76 = 11,140.40 : x
  2. Step 2: Convert to fraction form
    18,596.72/25,652.76 = 11,140.40/x
  3. Step 3: Cross multiply
    18,596.72x = 25,652.76 × 11,140.40
  4. Step 4: Simplify right side
    18,596.72x = 285,782,007.50
  5. Step 5: Solve for x
    x = 285,782,007.50/18,596.72
  6. Step 6: Final answer
    x = 15,367.33

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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.