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Finding the Fourth Proportional to 118,905.31, 164,083.05 and 67,907.95

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Solution

The fourth proportional to 118,905.31, 164,083.05 and 67,907.95 is: 93,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,905.31 : 164,083.05 = 67,907.95 : x
  2. Step 2: Convert to fraction form
    118,905.31/164,083.05 = 67,907.95/x
  3. Step 3: Cross multiply
    118,905.31x = 164,083.05 × 67,907.95
  4. Step 4: Simplify right side
    118,905.31x = 11,142,543,555.25
  5. Step 5: Solve for x
    x = 11,142,543,555.25/118,905.31
  6. Step 6: Final answer
    x = 93,709.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.