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Finding the Fourth Proportional to 488,086.40, 732,249.60 and 168,243.20

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Solution

The fourth proportional to 488,086.40, 732,249.60 and 168,243.20 is: 252,406.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,086.40 : 732,249.60 = 168,243.20 : x
  2. Step 2: Convert to fraction form
    488,086.40/732,249.60 = 168,243.20/x
  3. Step 3: Cross multiply
    488,086.40x = 732,249.60 × 168,243.20
  4. Step 4: Simplify right side
    488,086.40x = 123,196,015,902.72
  5. Step 5: Solve for x
    x = 123,196,015,902.72/488,086.40
  6. Step 6: Final answer
    x = 252,406.16

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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.