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Finding the Fourth Proportional to 18,392.16, 25,380.44 and 10,434.22

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Solution

The fourth proportional to 18,392.16, 25,380.44 and 10,434.22 is: 14,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.16 : 25,380.44 = 10,434.22 : x
  2. Step 2: Convert to fraction form
    18,392.16/25,380.44 = 10,434.22/x
  3. Step 3: Cross multiply
    18,392.16x = 25,380.44 × 10,434.22
  4. Step 4: Simplify right side
    18,392.16x = 264,825,018.16
  5. Step 5: Solve for x
    x = 264,825,018.16/18,392.16
  6. Step 6: Final answer
    x = 14,398.80

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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.