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Finding the Fourth Proportional to 19,235.25, 28,841.81 and 7,542.09

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Solution

The fourth proportional to 19,235.25, 28,841.81 and 7,542.09 is: 11,308.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.25 : 28,841.81 = 7,542.09 : x
  2. Step 2: Convert to fraction form
    19,235.25/28,841.81 = 7,542.09/x
  3. Step 3: Cross multiply
    19,235.25x = 28,841.81 × 7,542.09
  4. Step 4: Simplify right side
    19,235.25x = 217,527,489.07
  5. Step 5: Solve for x
    x = 217,527,489.07/19,235.25
  6. Step 6: Final answer
    x = 11,308.79

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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.