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Finding the Fourth Proportional to 419,601.92, 629,402.88 and 124,113.92

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Solution

The fourth proportional to 419,601.92, 629,402.88 and 124,113.92 is: 186,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,601.92 : 629,402.88 = 124,113.92 : x
  2. Step 2: Convert to fraction form
    419,601.92/629,402.88 = 124,113.92/x
  3. Step 3: Cross multiply
    419,601.92x = 629,402.88 × 124,113.92
  4. Step 4: Simplify right side
    419,601.92x = 78,117,658,696.09
  5. Step 5: Solve for x
    x = 78,117,658,696.09/419,601.92
  6. Step 6: Final answer
    x = 186,170.88

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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.