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Finding the Fourth Proportional to 339,568.40, 508,980.60 and 170,819.60

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Solution

The fourth proportional to 339,568.40, 508,980.60 and 170,819.60 is: 256,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,568.40 : 508,980.60 = 170,819.60 : x
  2. Step 2: Convert to fraction form
    339,568.40/508,980.60 = 170,819.60/x
  3. Step 3: Cross multiply
    339,568.40x = 508,980.60 × 170,819.60
  4. Step 4: Simplify right side
    339,568.40x = 86,943,862,499.76
  5. Step 5: Solve for x
    x = 86,943,862,499.76/339,568.40
  6. Step 6: Final answer
    x = 256,042.27

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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.