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Finding the Fourth Proportional to 19,698.66, 29,560.29 and 8,011.88

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Solution

The fourth proportional to 19,698.66, 29,560.29 and 8,011.88 is: 12,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.66 : 29,560.29 = 8,011.88 : x
  2. Step 2: Convert to fraction form
    19,698.66/29,560.29 = 8,011.88/x
  3. Step 3: Cross multiply
    19,698.66x = 29,560.29 × 8,011.88
  4. Step 4: Simplify right side
    19,698.66x = 236,833,348.44
  5. Step 5: Solve for x
    x = 236,833,348.44/19,698.66
  6. Step 6: Final answer
    x = 12,022.82

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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.