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Finding the Fourth Proportional to 159,197.60, 238,742.96 and 80,261.60

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Solution

The fourth proportional to 159,197.60, 238,742.96 and 80,261.60 is: 120,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,197.60 : 238,742.96 = 80,261.60 : x
  2. Step 2: Convert to fraction form
    159,197.60/238,742.96 = 80,261.60/x
  3. Step 3: Cross multiply
    159,197.60x = 238,742.96 × 80,261.60
  4. Step 4: Simplify right side
    159,197.60x = 19,161,891,958.34
  5. Step 5: Solve for x
    x = 19,161,891,958.34/159,197.60
  6. Step 6: Final answer
    x = 120,365.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.