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Finding the Fourth Proportional to 159,615.20, 239,077.20 and 131,967.20

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Solution

The fourth proportional to 159,615.20, 239,077.20 and 131,967.20 is: 197,665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,615.20 : 239,077.20 = 131,967.20 : x
  2. Step 2: Convert to fraction form
    159,615.20/239,077.20 = 131,967.20/x
  3. Step 3: Cross multiply
    159,615.20x = 239,077.20 × 131,967.20
  4. Step 4: Simplify right side
    159,615.20x = 31,550,348,667.84
  5. Step 5: Solve for x
    x = 31,550,348,667.84/159,615.20
  6. Step 6: Final answer
    x = 197,665.06

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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.