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Finding the Fourth Proportional to 19,157.94, 28,748.39 and 8,063.91

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Solution

The fourth proportional to 19,157.94, 28,748.39 and 8,063.91 is: 12,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.94 : 28,748.39 = 8,063.91 : x
  2. Step 2: Convert to fraction form
    19,157.94/28,748.39 = 8,063.91/x
  3. Step 3: Cross multiply
    19,157.94x = 28,748.39 × 8,063.91
  4. Step 4: Simplify right side
    19,157.94x = 231,824,389.29
  5. Step 5: Solve for x
    x = 231,824,389.29/19,157.94
  6. Step 6: Final answer
    x = 12,100.70

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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.