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Finding the Fourth Proportional to 18,796.92, 25,925.52 and 12,078.90

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Solution

The fourth proportional to 18,796.92, 25,925.52 and 12,078.90 is: 16,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.92 : 25,925.52 = 12,078.90 : x
  2. Step 2: Convert to fraction form
    18,796.92/25,925.52 = 12,078.90/x
  3. Step 3: Cross multiply
    18,796.92x = 25,925.52 × 12,078.90
  4. Step 4: Simplify right side
    18,796.92x = 313,151,832.02
  5. Step 5: Solve for x
    x = 313,151,832.02/18,796.92
  6. Step 6: Final answer
    x = 16,659.74

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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.