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Finding the Fourth Proportional to 251,644.60, 376,592.10 and 172,912.60

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Solution

The fourth proportional to 251,644.60, 376,592.10 and 172,912.60 is: 258,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,644.60 : 376,592.10 = 172,912.60 : x
  2. Step 2: Convert to fraction form
    251,644.60/376,592.10 = 172,912.60/x
  3. Step 3: Cross multiply
    251,644.60x = 376,592.10 × 172,912.60
  4. Step 4: Simplify right side
    251,644.60x = 65,117,519,150.46
  5. Step 5: Solve for x
    x = 65,117,519,150.46/251,644.60
  6. Step 6: Final answer
    x = 258,767.80

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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.