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Finding the Fourth Proportional to 14,159.19, 19,540.19 and 7,786.27

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Solution

The fourth proportional to 14,159.19, 19,540.19 and 7,786.27 is: 10,745.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.19 : 19,540.19 = 7,786.27 : x
  2. Step 2: Convert to fraction form
    14,159.19/19,540.19 = 7,786.27/x
  3. Step 3: Cross multiply
    14,159.19x = 19,540.19 × 7,786.27
  4. Step 4: Simplify right side
    14,159.19x = 152,145,131.83
  5. Step 5: Solve for x
    x = 152,145,131.83/14,159.19
  6. Step 6: Final answer
    x = 10,745.33

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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.