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Finding the Fourth Proportional to 19,696.17, 29,544.03 and 4,905.21

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Solution

The fourth proportional to 19,696.17, 29,544.03 and 4,905.21 is: 7,357.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,696.17 : 29,544.03 = 4,905.21 : x
  2. Step 2: Convert to fraction form
    19,696.17/29,544.03 = 4,905.21/x
  3. Step 3: Cross multiply
    19,696.17x = 29,544.03 × 4,905.21
  4. Step 4: Simplify right side
    19,696.17x = 144,919,671.40
  5. Step 5: Solve for x
    x = 144,919,671.40/19,696.17
  6. Step 6: Final answer
    x = 7,357.76

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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.