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Finding the Fourth Proportional to 408,880.36, 613,407.92 and 124,593.61

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Solution

The fourth proportional to 408,880.36, 613,407.92 and 124,593.61 is: 186,917.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,880.36 : 613,407.92 = 124,593.61 : x
  2. Step 2: Convert to fraction form
    408,880.36/613,407.92 = 124,593.61/x
  3. Step 3: Cross multiply
    408,880.36x = 613,407.92 × 124,593.61
  4. Step 4: Simplify right side
    408,880.36x = 76,426,707,155.39
  5. Step 5: Solve for x
    x = 76,426,707,155.39/408,880.36
  6. Step 6: Final answer
    x = 186,917.04

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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.