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Finding the Fourth Proportional to 167,405.61, 231,021.44 and 90,925.44

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Solution

The fourth proportional to 167,405.61, 231,021.44 and 90,925.44 is: 125,478.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,405.61 : 231,021.44 = 90,925.44 : x
  2. Step 2: Convert to fraction form
    167,405.61/231,021.44 = 90,925.44/x
  3. Step 3: Cross multiply
    167,405.61x = 231,021.44 × 90,925.44
  4. Step 4: Simplify right side
    167,405.61x = 21,005,726,081.43
  5. Step 5: Solve for x
    x = 21,005,726,081.43/167,405.61
  6. Step 6: Final answer
    x = 125,478.03

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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.