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Finding the Fourth Proportional to 18,763.92, 25,892.64 and 10,380.24

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Solution

The fourth proportional to 18,763.92, 25,892.64 and 10,380.24 is: 14,323.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.92 : 25,892.64 = 10,380.24 : x
  2. Step 2: Convert to fraction form
    18,763.92/25,892.64 = 10,380.24/x
  3. Step 3: Cross multiply
    18,763.92x = 25,892.64 × 10,380.24
  4. Step 4: Simplify right side
    18,763.92x = 268,771,817.43
  5. Step 5: Solve for x
    x = 268,771,817.43/18,763.92
  6. Step 6: Final answer
    x = 14,323.86

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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.