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Finding the Fourth Proportional to 324,061.20, 486,091.80 and 113,677.20

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Solution

The fourth proportional to 324,061.20, 486,091.80 and 113,677.20 is: 170,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,061.20 : 486,091.80 = 113,677.20 : x
  2. Step 2: Convert to fraction form
    324,061.20/486,091.80 = 113,677.20/x
  3. Step 3: Cross multiply
    324,061.20x = 486,091.80 × 113,677.20
  4. Step 4: Simplify right side
    324,061.20x = 55,257,554,766.96
  5. Step 5: Solve for x
    x = 55,257,554,766.96/324,061.20
  6. Step 6: Final answer
    x = 170,515.80

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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.