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Finding the Fourth Proportional to 339,866.89, 469,028.35 and 186,916.91

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Solution

The fourth proportional to 339,866.89, 469,028.35 and 186,916.91 is: 257,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,866.89 : 469,028.35 = 186,916.91 : x
  2. Step 2: Convert to fraction form
    339,866.89/469,028.35 = 186,916.91/x
  3. Step 3: Cross multiply
    339,866.89x = 469,028.35 × 186,916.91
  4. Step 4: Simplify right side
    339,866.89x = 87,669,327,948.14
  5. Step 5: Solve for x
    x = 87,669,327,948.14/339,866.89
  6. Step 6: Final answer
    x = 257,951.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.