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Finding the Fourth Proportional to 18,792.92, 28,168.99 and 9,410.31

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Solution

The fourth proportional to 18,792.92, 28,168.99 and 9,410.31 is: 14,105.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.92 : 28,168.99 = 9,410.31 : x
  2. Step 2: Convert to fraction form
    18,792.92/28,168.99 = 9,410.31/x
  3. Step 3: Cross multiply
    18,792.92x = 28,168.99 × 9,410.31
  4. Step 4: Simplify right side
    18,792.92x = 265,078,928.29
  5. Step 5: Solve for x
    x = 265,078,928.29/18,792.92
  6. Step 6: Final answer
    x = 14,105.25

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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.