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Finding the Fourth Proportional to 169,912.89, 234,485.69 and 93,435.12

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Solution

The fourth proportional to 169,912.89, 234,485.69 and 93,435.12 is: 128,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,912.89 : 234,485.69 = 93,435.12 : x
  2. Step 2: Convert to fraction form
    169,912.89/234,485.69 = 93,435.12/x
  3. Step 3: Cross multiply
    169,912.89x = 234,485.69 × 93,435.12
  4. Step 4: Simplify right side
    169,912.89x = 21,909,198,116.26
  5. Step 5: Solve for x
    x = 21,909,198,116.26/169,912.89
  6. Step 6: Final answer
    x = 128,943.71

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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.