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Finding the Fourth Proportional to 159,308.20, 238,616.70 and 131,660.20

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Solution

The fourth proportional to 159,308.20, 238,616.70 and 131,660.20 is: 197,204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,308.20 : 238,616.70 = 131,660.20 : x
  2. Step 2: Convert to fraction form
    159,308.20/238,616.70 = 131,660.20/x
  3. Step 3: Cross multiply
    159,308.20x = 238,616.70 × 131,660.20
  4. Step 4: Simplify right side
    159,308.20x = 31,416,322,445.34
  5. Step 5: Solve for x
    x = 31,416,322,445.34/159,308.20
  6. Step 6: Final answer
    x = 197,204.68

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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.