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Finding the Fourth Proportional to 138,801.64, 191,563.62 and 82,234.60

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Solution

The fourth proportional to 138,801.64, 191,563.62 and 82,234.60 is: 113,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.64 : 191,563.62 = 82,234.60 : x
  2. Step 2: Convert to fraction form
    138,801.64/191,563.62 = 82,234.60/x
  3. Step 3: Cross multiply
    138,801.64x = 191,563.62 × 82,234.60
  4. Step 4: Simplify right side
    138,801.64x = 15,753,157,665.25
  5. Step 5: Solve for x
    x = 15,753,157,665.25/138,801.64
  6. Step 6: Final answer
    x = 113,494.03

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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.