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Finding the Fourth Proportional to 251,993.31, 347,734.26 and 138,816.06

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Solution

The fourth proportional to 251,993.31, 347,734.26 and 138,816.06 is: 191,557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,993.31 : 347,734.26 = 138,816.06 : x
  2. Step 2: Convert to fraction form
    251,993.31/347,734.26 = 138,816.06/x
  3. Step 3: Cross multiply
    251,993.31x = 347,734.26 × 138,816.06
  4. Step 4: Simplify right side
    251,993.31x = 48,271,099,900.22
  5. Step 5: Solve for x
    x = 48,271,099,900.22/251,993.31
  6. Step 6: Final answer
    x = 191,557.07

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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.