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Finding the Fourth Proportional to 19,422.99, 26,813.97 and 13,762.44

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Solution

The fourth proportional to 19,422.99, 26,813.97 and 13,762.44 is: 18,999.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,422.99 : 26,813.97 = 13,762.44 : x
  2. Step 2: Convert to fraction form
    19,422.99/26,813.97 = 13,762.44/x
  3. Step 3: Cross multiply
    19,422.99x = 26,813.97 × 13,762.44
  4. Step 4: Simplify right side
    19,422.99x = 369,025,653.29
  5. Step 5: Solve for x
    x = 369,025,653.29/19,422.99
  6. Step 6: Final answer
    x = 18,999.43

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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.