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Finding the Fourth Proportional to 18,809.26, 25,985.00 and 12,364.27

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Solution

The fourth proportional to 18,809.26, 25,985.00 and 12,364.27 is: 17,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.26 : 25,985.00 = 12,364.27 : x
  2. Step 2: Convert to fraction form
    18,809.26/25,985.00 = 12,364.27/x
  3. Step 3: Cross multiply
    18,809.26x = 25,985.00 × 12,364.27
  4. Step 4: Simplify right side
    18,809.26x = 321,285,594.98
  5. Step 5: Solve for x
    x = 321,285,594.98/18,809.26
  6. Step 6: Final answer
    x = 17,081.24

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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.