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Finding the Fourth Proportional to 408,524.60, 612,786.54 and 124,217.48

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Solution

The fourth proportional to 408,524.60, 612,786.54 and 124,217.48 is: 186,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,524.60 : 612,786.54 = 124,217.48 : x
  2. Step 2: Convert to fraction form
    408,524.60/612,786.54 = 124,217.48/x
  3. Step 3: Cross multiply
    408,524.60x = 612,786.54 × 124,217.48
  4. Step 4: Simplify right side
    408,524.60x = 76,118,799,776.72
  5. Step 5: Solve for x
    x = 76,118,799,776.72/408,524.60
  6. Step 6: Final answer
    x = 186,326.11

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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.