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Finding the Fourth Proportional to 19,163.64, 28,748.16 and 8,063.40

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Solution

The fourth proportional to 19,163.64, 28,748.16 and 8,063.40 is: 12,096.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,163.64 : 28,748.16 = 8,063.40 : x
  2. Step 2: Convert to fraction form
    19,163.64/28,748.16 = 8,063.40/x
  3. Step 3: Cross multiply
    19,163.64x = 28,748.16 × 8,063.40
  4. Step 4: Simplify right side
    19,163.64x = 231,807,913.34
  5. Step 5: Solve for x
    x = 231,807,913.34/19,163.64
  6. Step 6: Final answer
    x = 12,096.24

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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.