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Finding the Fourth Proportional to 408,661.93, 613,015.95 and 124,361.76

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Solution

The fourth proportional to 408,661.93, 613,015.95 and 124,361.76 is: 186,549.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,661.93 : 613,015.95 = 124,361.76 : x
  2. Step 2: Convert to fraction form
    408,661.93/613,015.95 = 124,361.76/x
  3. Step 3: Cross multiply
    408,661.93x = 613,015.95 × 124,361.76
  4. Step 4: Simplify right side
    408,661.93x = 76,235,740,917.53
  5. Step 5: Solve for x
    x = 76,235,740,917.53/408,661.93
  6. Step 6: Final answer
    x = 186,549.65

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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.