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Finding the Fourth Proportional to 339,302.80, 508,954.20 and 161,894.80

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Solution

The fourth proportional to 339,302.80, 508,954.20 and 161,894.80 is: 242,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,302.80 : 508,954.20 = 161,894.80 : x
  2. Step 2: Convert to fraction form
    339,302.80/508,954.20 = 161,894.80/x
  3. Step 3: Cross multiply
    339,302.80x = 508,954.20 × 161,894.80
  4. Step 4: Simplify right side
    339,302.80x = 82,397,038,418.16
  5. Step 5: Solve for x
    x = 82,397,038,418.16/339,302.80
  6. Step 6: Final answer
    x = 242,842.20

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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.