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Finding the Fourth Proportional to 252,012.69, 347,777.51 and 138,835.44

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Solution

The fourth proportional to 252,012.69, 347,777.51 and 138,835.44 is: 191,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,012.69 : 347,777.51 = 138,835.44 : x
  2. Step 2: Convert to fraction form
    252,012.69/347,777.51 = 138,835.44/x
  3. Step 3: Cross multiply
    252,012.69x = 347,777.51 × 138,835.44
  4. Step 4: Simplify right side
    252,012.69x = 48,283,842,928.78
  5. Step 5: Solve for x
    x = 48,283,842,928.78/252,012.69
  6. Step 6: Final answer
    x = 191,592.90

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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.