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Finding the Fourth Proportional to 339,157.80, 508,736.70 and 162,010.80

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Solution

The fourth proportional to 339,157.80, 508,736.70 and 162,010.80 is: 243,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,157.80 : 508,736.70 = 162,010.80 : x
  2. Step 2: Convert to fraction form
    339,157.80/508,736.70 = 162,010.80/x
  3. Step 3: Cross multiply
    339,157.80x = 508,736.70 × 162,010.80
  4. Step 4: Simplify right side
    339,157.80x = 82,420,839,756.36
  5. Step 5: Solve for x
    x = 82,420,839,756.36/339,157.80
  6. Step 6: Final answer
    x = 243,016.20

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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.