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Finding the Fourth Proportional to 118,947.34, 164,147.16 and 68,646.34

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Solution

The fourth proportional to 118,947.34, 164,147.16 and 68,646.34 is: 94,731.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,947.34 : 164,147.16 = 68,646.34 : x
  2. Step 2: Convert to fraction form
    118,947.34/164,147.16 = 68,646.34/x
  3. Step 3: Cross multiply
    118,947.34x = 164,147.16 × 68,646.34
  4. Step 4: Simplify right side
    118,947.34x = 11,268,101,755.39
  5. Step 5: Solve for x
    x = 11,268,101,755.39/118,947.34
  6. Step 6: Final answer
    x = 94,731.85

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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.