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Finding the Fourth Proportional to 18,755.52, 25,807.24 and 18,109.12

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Solution

The fourth proportional to 18,755.52, 25,807.24 and 18,109.12 is: 24,917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.52 : 25,807.24 = 18,109.12 : x
  2. Step 2: Convert to fraction form
    18,755.52/25,807.24 = 18,109.12/x
  3. Step 3: Cross multiply
    18,755.52x = 25,807.24 × 18,109.12
  4. Step 4: Simplify right side
    18,755.52x = 467,346,406.03
  5. Step 5: Solve for x
    x = 467,346,406.03/18,755.52
  6. Step 6: Final answer
    x = 24,917.81

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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.