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Finding the Fourth Proportional to 285,951.67, 394,623.80 and 172,752.55

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Solution

The fourth proportional to 285,951.67, 394,623.80 and 172,752.55 is: 238,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,951.67 : 394,623.80 = 172,752.55 : x
  2. Step 2: Convert to fraction form
    285,951.67/394,623.80 = 172,752.55/x
  3. Step 3: Cross multiply
    285,951.67x = 394,623.80 × 172,752.55
  4. Step 4: Simplify right side
    285,951.67x = 68,172,266,538.19
  5. Step 5: Solve for x
    x = 68,172,266,538.19/285,951.67
  6. Step 6: Final answer
    x = 238,404.86

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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.