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Finding the Fourth Proportional to 18,512.88, 25,566.48 and 11,801.52

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Solution

The fourth proportional to 18,512.88, 25,566.48 and 11,801.52 is: 16,298.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.88 : 25,566.48 = 11,801.52 : x
  2. Step 2: Convert to fraction form
    18,512.88/25,566.48 = 11,801.52/x
  3. Step 3: Cross multiply
    18,512.88x = 25,566.48 × 11,801.52
  4. Step 4: Simplify right side
    18,512.88x = 301,723,325.05
  5. Step 5: Solve for x
    x = 301,723,325.05/18,512.88
  6. Step 6: Final answer
    x = 16,298.02

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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.