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Finding the Fourth Proportional to 368,490.79, 552,729.99 and 165,974.25

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Solution

The fourth proportional to 368,490.79, 552,729.99 and 165,974.25 is: 248,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,490.79 : 552,729.99 = 165,974.25 : x
  2. Step 2: Convert to fraction form
    368,490.79/552,729.99 = 165,974.25/x
  3. Step 3: Cross multiply
    368,490.79x = 552,729.99 × 165,974.25
  4. Step 4: Simplify right side
    368,490.79x = 91,738,942,779.11
  5. Step 5: Solve for x
    x = 91,738,942,779.11/368,490.79
  6. Step 6: Final answer
    x = 248,958.58

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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.