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Finding the Fourth Proportional to 66,414.66, 99,636.57 and 19,671.18

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Solution

The fourth proportional to 66,414.66, 99,636.57 and 19,671.18 is: 29,511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,414.66 : 99,636.57 = 19,671.18 : x
  2. Step 2: Convert to fraction form
    66,414.66/99,636.57 = 19,671.18/x
  3. Step 3: Cross multiply
    66,414.66x = 99,636.57 × 19,671.18
  4. Step 4: Simplify right side
    66,414.66x = 1,959,968,903.05
  5. Step 5: Solve for x
    x = 1,959,968,903.05/66,414.66
  6. Step 6: Final answer
    x = 29,511.09

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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.