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Finding the Fourth Proportional to 286,173.86, 394,839.90 and 178,852.91

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Solution

The fourth proportional to 286,173.86, 394,839.90 and 178,852.91 is: 246,767.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,173.86 : 394,839.90 = 178,852.91 : x
  2. Step 2: Convert to fraction form
    286,173.86/394,839.90 = 178,852.91/x
  3. Step 3: Cross multiply
    286,173.86x = 394,839.90 × 178,852.91
  4. Step 4: Simplify right side
    286,173.86x = 70,618,265,099.11
  5. Step 5: Solve for x
    x = 70,618,265,099.11/286,173.86
  6. Step 6: Final answer
    x = 246,767.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.