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Finding the Fourth Proportional to 19,046.94, 28,573.74 and 7,961.42

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Solution

The fourth proportional to 19,046.94, 28,573.74 and 7,961.42 is: 11,943.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,046.94 : 28,573.74 = 7,961.42 : x
  2. Step 2: Convert to fraction form
    19,046.94/28,573.74 = 7,961.42/x
  3. Step 3: Cross multiply
    19,046.94x = 28,573.74 × 7,961.42
  4. Step 4: Simplify right side
    19,046.94x = 227,487,402.24
  5. Step 5: Solve for x
    x = 227,487,402.24/19,046.94
  6. Step 6: Final answer
    x = 11,943.51

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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.