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Finding the Fourth Proportional to 339,628.90, 509,412.11 and 114,963.66

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Solution

The fourth proportional to 339,628.90, 509,412.11 and 114,963.66 is: 172,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,628.90 : 509,412.11 = 114,963.66 : x
  2. Step 2: Convert to fraction form
    339,628.90/509,412.11 = 114,963.66/x
  3. Step 3: Cross multiply
    339,628.90x = 509,412.11 × 114,963.66
  4. Step 4: Simplify right side
    339,628.90x = 58,563,880,613.92
  5. Step 5: Solve for x
    x = 58,563,880,613.92/339,628.90
  6. Step 6: Final answer
    x = 172,434.92

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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.