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Finding the Fourth Proportional to 122,273.31, 168,735 and 68,558.16

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Solution

The fourth proportional to 122,273.31, 168,735 and 68,558.16 is: 94,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,273.31 : 168,735 = 68,558.16 : x
  2. Step 2: Convert to fraction form
    122,273.31/168,735 = 68,558.16/x
  3. Step 3: Cross multiply
    122,273.31x = 168,735 × 68,558.16
  4. Step 4: Simplify right side
    122,273.31x = 11,568,161,127.60
  5. Step 5: Solve for x
    x = 11,568,161,127.60/122,273.31
  6. Step 6: Final answer
    x = 94,609.05

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1.5x scale

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.