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Finding the Fourth Proportional to 167,409.36, 231,026.62 and 90,929.20

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Solution

The fourth proportional to 167,409.36, 231,026.62 and 90,929.20 is: 125,483.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,409.36 : 231,026.62 = 90,929.20 : x
  2. Step 2: Convert to fraction form
    167,409.36/231,026.62 = 90,929.20/x
  3. Step 3: Cross multiply
    167,409.36x = 231,026.62 × 90,929.20
  4. Step 4: Simplify right side
    167,409.36x = 21,007,065,735.30
  5. Step 5: Solve for x
    x = 21,007,065,735.30/167,409.36
  6. Step 6: Final answer
    x = 125,483.22

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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.