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Finding the Fourth Proportional to 19,991.73, 29,924.72 and 13,715.04

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Solution

The fourth proportional to 19,991.73, 29,924.72 and 13,715.04 is: 20,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.73 : 29,924.72 = 13,715.04 : x
  2. Step 2: Convert to fraction form
    19,991.73/29,924.72 = 13,715.04/x
  3. Step 3: Cross multiply
    19,991.73x = 29,924.72 × 13,715.04
  4. Step 4: Simplify right side
    19,991.73x = 410,418,731.79
  5. Step 5: Solve for x
    x = 410,418,731.79/19,991.73
  6. Step 6: Final answer
    x = 20,529.43

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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.