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Finding the Fourth Proportional to 19,996.74, 29,994.96 and 8,309.96

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Solution

The fourth proportional to 19,996.74, 29,994.96 and 8,309.96 is: 12,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,996.74 : 29,994.96 = 8,309.96 : x
  2. Step 2: Convert to fraction form
    19,996.74/29,994.96 = 8,309.96/x
  3. Step 3: Cross multiply
    19,996.74x = 29,994.96 × 8,309.96
  4. Step 4: Simplify right side
    19,996.74x = 249,256,864.73
  5. Step 5: Solve for x
    x = 249,256,864.73/19,996.74
  6. Step 6: Final answer
    x = 12,464.88

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1.5x scale

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.