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Finding the Fourth Proportional to 19,169.27, 28,761.04 and 8,636.13

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Solution

The fourth proportional to 19,169.27, 28,761.04 and 8,636.13 is: 12,957.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,169.27 : 28,761.04 = 8,636.13 : x
  2. Step 2: Convert to fraction form
    19,169.27/28,761.04 = 8,636.13/x
  3. Step 3: Cross multiply
    19,169.27x = 28,761.04 × 8,636.13
  4. Step 4: Simplify right side
    19,169.27x = 248,384,091.17
  5. Step 5: Solve for x
    x = 248,384,091.17/19,169.27
  6. Step 6: Final answer
    x = 12,957.41

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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.