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Finding the Fourth Proportional to 18,760.64, 28,133.92 and 7,067.52

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Solution

The fourth proportional to 18,760.64, 28,133.92 and 7,067.52 is: 10,598.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.64 : 28,133.92 = 7,067.52 : x
  2. Step 2: Convert to fraction form
    18,760.64/28,133.92 = 7,067.52/x
  3. Step 3: Cross multiply
    18,760.64x = 28,133.92 × 7,067.52
  4. Step 4: Simplify right side
    18,760.64x = 198,837,042.28
  5. Step 5: Solve for x
    x = 198,837,042.28/18,760.64
  6. Step 6: Final answer
    x = 10,598.63

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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.