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Finding the Fourth Proportional to 159,793.46, 220,507.56 and 91,762.55

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Solution

The fourth proportional to 159,793.46, 220,507.56 and 91,762.55 is: 126,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,793.46 : 220,507.56 = 91,762.55 : x
  2. Step 2: Convert to fraction form
    159,793.46/220,507.56 = 91,762.55/x
  3. Step 3: Cross multiply
    159,793.46x = 220,507.56 × 91,762.55
  4. Step 4: Simplify right side
    159,793.46x = 20,234,335,999.88
  5. Step 5: Solve for x
    x = 20,234,335,999.88/159,793.46
  6. Step 6: Final answer
    x = 126,628.06

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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.