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Finding the Fourth Proportional to 18,752.88, 28,140.26 and 7,067.01

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Solution

The fourth proportional to 18,752.88, 28,140.26 and 7,067.01 is: 10,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.88 : 28,140.26 = 7,067.01 : x
  2. Step 2: Convert to fraction form
    18,752.88/28,140.26 = 7,067.01/x
  3. Step 3: Cross multiply
    18,752.88x = 28,140.26 × 7,067.01
  4. Step 4: Simplify right side
    18,752.88x = 198,867,498.82
  5. Step 5: Solve for x
    x = 198,867,498.82/18,752.88
  6. Step 6: Final answer
    x = 10,604.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.