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Finding the Fourth Proportional to 18,496.86, 25,696.74 and 18,323.92

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Solution

The fourth proportional to 18,496.86, 25,696.74 and 18,323.92 is: 25,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,496.86 : 25,696.74 = 18,323.92 : x
  2. Step 2: Convert to fraction form
    18,496.86/25,696.74 = 18,323.92/x
  3. Step 3: Cross multiply
    18,496.86x = 25,696.74 × 18,323.92
  4. Step 4: Simplify right side
    18,496.86x = 470,865,108.86
  5. Step 5: Solve for x
    x = 470,865,108.86/18,496.86
  6. Step 6: Final answer
    x = 25,456.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.