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Finding the Fourth Proportional to 225,431.90, 338,199.68 and 67,663.34

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Solution

The fourth proportional to 225,431.90, 338,199.68 and 67,663.34 is: 101,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,431.90 : 338,199.68 = 67,663.34 : x
  2. Step 2: Convert to fraction form
    225,431.90/338,199.68 = 67,663.34/x
  3. Step 3: Cross multiply
    225,431.90x = 338,199.68 × 67,663.34
  4. Step 4: Simplify right side
    225,431.90x = 22,883,718,413.89
  5. Step 5: Solve for x
    x = 22,883,718,413.89/225,431.90
  6. Step 6: Final answer
    x = 101,510.56

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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.