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Finding the Fourth Proportional to 19,811.98, 29,716.49 and 7,326.17

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Solution

The fourth proportional to 19,811.98, 29,716.49 and 7,326.17 is: 10,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.98 : 29,716.49 = 7,326.17 : x
  2. Step 2: Convert to fraction form
    19,811.98/29,716.49 = 7,326.17/x
  3. Step 3: Cross multiply
    19,811.98x = 29,716.49 × 7,326.17
  4. Step 4: Simplify right side
    19,811.98x = 217,707,872.33
  5. Step 5: Solve for x
    x = 217,707,872.33/19,811.98
  6. Step 6: Final answer
    x = 10,988.70

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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.