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Finding the Fourth Proportional to 19,215.73, 28,825.08 and 7,375.17

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Solution

The fourth proportional to 19,215.73, 28,825.08 and 7,375.17 is: 11,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.73 : 28,825.08 = 7,375.17 : x
  2. Step 2: Convert to fraction form
    19,215.73/28,825.08 = 7,375.17/x
  3. Step 3: Cross multiply
    19,215.73x = 28,825.08 × 7,375.17
  4. Step 4: Simplify right side
    19,215.73x = 212,589,865.26
  5. Step 5: Solve for x
    x = 212,589,865.26/19,215.73
  6. Step 6: Final answer
    x = 11,063.32

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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.