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Finding the Fourth Proportional to 111,893.70, 168,453.06 and 102,095.94

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Solution

The fourth proportional to 111,893.70, 168,453.06 and 102,095.94 is: 153,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,893.70 : 168,453.06 = 102,095.94 : x
  2. Step 2: Convert to fraction form
    111,893.70/168,453.06 = 102,095.94/x
  3. Step 3: Cross multiply
    111,893.70x = 168,453.06 × 102,095.94
  4. Step 4: Simplify right side
    111,893.70x = 17,198,373,506.58
  5. Step 5: Solve for x
    x = 17,198,373,506.58/111,893.70
  6. Step 6: Final answer
    x = 153,702.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.