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Finding the Fourth Proportional to 19,926.45, 29,891.84 and 7,452.45

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Solution

The fourth proportional to 19,926.45, 29,891.84 and 7,452.45 is: 11,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.45 : 29,891.84 = 7,452.45 : x
  2. Step 2: Convert to fraction form
    19,926.45/29,891.84 = 7,452.45/x
  3. Step 3: Cross multiply
    19,926.45x = 29,891.84 × 7,452.45
  4. Step 4: Simplify right side
    19,926.45x = 222,767,405.75
  5. Step 5: Solve for x
    x = 222,767,405.75/19,926.45
  6. Step 6: Final answer
    x = 11,179.48

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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.