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Finding the Fourth Proportional to 18,701.44, 28,044.84 and 7,008.28

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Solution

The fourth proportional to 18,701.44, 28,044.84 and 7,008.28 is: 10,509.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.44 : 28,044.84 = 7,008.28 : x
  2. Step 2: Convert to fraction form
    18,701.44/28,044.84 = 7,008.28/x
  3. Step 3: Cross multiply
    18,701.44x = 28,044.84 × 7,008.28
  4. Step 4: Simplify right side
    18,701.44x = 196,546,091.28
  5. Step 5: Solve for x
    x = 196,546,091.28/18,701.44
  6. Step 6: Final answer
    x = 10,509.68

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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.