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Finding the Fourth Proportional to 18,976.16, 28,426.16 and 17,426.02

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Solution

The fourth proportional to 18,976.16, 28,426.16 and 17,426.02 is: 26,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.16 : 28,426.16 = 17,426.02 : x
  2. Step 2: Convert to fraction form
    18,976.16/28,426.16 = 17,426.02/x
  3. Step 3: Cross multiply
    18,976.16x = 28,426.16 × 17,426.02
  4. Step 4: Simplify right side
    18,976.16x = 495,354,832.68
  5. Step 5: Solve for x
    x = 495,354,832.68/18,976.16
  6. Step 6: Final answer
    x = 26,104.06

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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.