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Finding the Fourth Proportional to 19,797.21, 29,662.88 and 13,941.52

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Solution

The fourth proportional to 19,797.21, 29,662.88 and 13,941.52 is: 20,889.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,797.21 : 29,662.88 = 13,941.52 : x
  2. Step 2: Convert to fraction form
    19,797.21/29,662.88 = 13,941.52/x
  3. Step 3: Cross multiply
    19,797.21x = 29,662.88 × 13,941.52
  4. Step 4: Simplify right side
    19,797.21x = 413,545,490.91
  5. Step 5: Solve for x
    x = 413,545,490.91/19,797.21
  6. Step 6: Final answer
    x = 20,889.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.