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Finding the Fourth Proportional to 19,951.64, 29,918.27 and 5,906.64

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Solution

The fourth proportional to 19,951.64, 29,918.27 and 5,906.64 is: 8,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.64 : 29,918.27 = 5,906.64 : x
  2. Step 2: Convert to fraction form
    19,951.64/29,918.27 = 5,906.64/x
  3. Step 3: Cross multiply
    19,951.64x = 29,918.27 × 5,906.64
  4. Step 4: Simplify right side
    19,951.64x = 176,716,420.78
  5. Step 5: Solve for x
    x = 176,716,420.78/19,951.64
  6. Step 6: Final answer
    x = 8,857.24

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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.