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Finding the Fourth Proportional to 251,999.56, 347,759.24 and 138,822.31

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Solution

The fourth proportional to 251,999.56, 347,759.24 and 138,822.31 is: 191,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,999.56 : 347,759.24 = 138,822.31 : x
  2. Step 2: Convert to fraction form
    251,999.56/347,759.24 = 138,822.31/x
  3. Step 3: Cross multiply
    251,999.56x = 347,759.24 × 138,822.31
  4. Step 4: Simplify right side
    251,999.56x = 48,276,741,020.64
  5. Step 5: Solve for x
    x = 48,276,741,020.64/251,999.56
  6. Step 6: Final answer
    x = 191,574.70

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1.5x scale

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.