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Finding the Fourth Proportional to 339,224.40, 508,836.60 and 89,906.40

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Solution

The fourth proportional to 339,224.40, 508,836.60 and 89,906.40 is: 134,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,224.40 : 508,836.60 = 89,906.40 : x
  2. Step 2: Convert to fraction form
    339,224.40/508,836.60 = 89,906.40/x
  3. Step 3: Cross multiply
    339,224.40x = 508,836.60 × 89,906.40
  4. Step 4: Simplify right side
    339,224.40x = 45,747,666,894.24
  5. Step 5: Solve for x
    x = 45,747,666,894.24/339,224.40
  6. Step 6: Final answer
    x = 134,859.60

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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.