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Finding the Fourth Proportional to 19,139.16, 28,704.42 and 6,827.16

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Solution

The fourth proportional to 19,139.16, 28,704.42 and 6,827.16 is: 10,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.16 : 28,704.42 = 6,827.16 : x
  2. Step 2: Convert to fraction form
    19,139.16/28,704.42 = 6,827.16/x
  3. Step 3: Cross multiply
    19,139.16x = 28,704.42 × 6,827.16
  4. Step 4: Simplify right side
    19,139.16x = 195,969,668.05
  5. Step 5: Solve for x
    x = 195,969,668.05/19,139.16
  6. Step 6: Final answer
    x = 10,239.20

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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.