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Finding the Fourth Proportional to 172,393.98, 258,036.84 and 92,231.88

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Solution

The fourth proportional to 172,393.98, 258,036.84 and 92,231.88 is: 138,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,393.98 : 258,036.84 = 92,231.88 : x
  2. Step 2: Convert to fraction form
    172,393.98/258,036.84 = 92,231.88/x
  3. Step 3: Cross multiply
    172,393.98x = 258,036.84 × 92,231.88
  4. Step 4: Simplify right side
    172,393.98x = 23,799,222,862.46
  5. Step 5: Solve for x
    x = 23,799,222,862.46/172,393.98
  6. Step 6: Final answer
    x = 138,051.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.