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Finding the Fourth Proportional to 158,687.96, 238,020.48 and 74,467.28

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Solution

The fourth proportional to 158,687.96, 238,020.48 and 74,467.28 is: 111,695.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,687.96 : 238,020.48 = 74,467.28 : x
  2. Step 2: Convert to fraction form
    158,687.96/238,020.48 = 74,467.28/x
  3. Step 3: Cross multiply
    158,687.96x = 238,020.48 × 74,467.28
  4. Step 4: Simplify right side
    158,687.96x = 17,724,737,729.89
  5. Step 5: Solve for x
    x = 17,724,737,729.89/158,687.96
  6. Step 6: Final answer
    x = 111,695.54

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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.