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Finding the Fourth Proportional to 18,757.20, 25,887.20 and 10,799.25

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Solution

The fourth proportional to 18,757.20, 25,887.20 and 10,799.25 is: 14,904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.20 : 25,887.20 = 10,799.25 : x
  2. Step 2: Convert to fraction form
    18,757.20/25,887.20 = 10,799.25/x
  3. Step 3: Cross multiply
    18,757.20x = 25,887.20 × 10,799.25
  4. Step 4: Simplify right side
    18,757.20x = 279,562,290.60
  5. Step 5: Solve for x
    x = 279,562,290.60/18,757.20
  6. Step 6: Final answer
    x = 14,904.27

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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.