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Finding the Fourth Proportional to 18,796.90, 25,927.92 and 12,091.24

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Solution

The fourth proportional to 18,796.90, 25,927.92 and 12,091.24 is: 16,678.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.90 : 25,927.92 = 12,091.24 : x
  2. Step 2: Convert to fraction form
    18,796.90/25,927.92 = 12,091.24/x
  3. Step 3: Cross multiply
    18,796.90x = 25,927.92 × 12,091.24
  4. Step 4: Simplify right side
    18,796.90x = 313,500,703.42
  5. Step 5: Solve for x
    x = 313,500,703.42/18,796.90
  6. Step 6: Final answer
    x = 16,678.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.