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Finding the Fourth Proportional to 348,740.40, 523,110.60 and 327,745.20

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Solution

The fourth proportional to 348,740.40, 523,110.60 and 327,745.20 is: 491,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,740.40 : 523,110.60 = 327,745.20 : x
  2. Step 2: Convert to fraction form
    348,740.40/523,110.60 = 327,745.20/x
  3. Step 3: Cross multiply
    348,740.40x = 523,110.60 × 327,745.20
  4. Step 4: Simplify right side
    348,740.40x = 171,446,988,219.12
  5. Step 5: Solve for x
    x = 171,446,988,219.12/348,740.40
  6. Step 6: Final answer
    x = 491,617.80

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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.