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Finding the Fourth Proportional to 19,876.92, 29,796.84 and 7,393.92

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Solution

The fourth proportional to 19,876.92, 29,796.84 and 7,393.92 is: 11,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.92 : 29,796.84 = 7,393.92 : x
  2. Step 2: Convert to fraction form
    19,876.92/29,796.84 = 7,393.92/x
  3. Step 3: Cross multiply
    19,876.92x = 29,796.84 × 7,393.92
  4. Step 4: Simplify right side
    19,876.92x = 220,315,451.21
  5. Step 5: Solve for x
    x = 220,315,451.21/19,876.92
  6. Step 6: Final answer
    x = 11,083.98

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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.