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Finding the Fourth Proportional to 159,596.15, 220,238.26 and 87,976.15

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Solution

The fourth proportional to 159,596.15, 220,238.26 and 87,976.15 is: 121,404.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.15 : 220,238.26 = 87,976.15 : x
  2. Step 2: Convert to fraction form
    159,596.15/220,238.26 = 87,976.15/x
  3. Step 3: Cross multiply
    159,596.15x = 220,238.26 × 87,976.15
  4. Step 4: Simplify right side
    159,596.15x = 19,375,713,426.96
  5. Step 5: Solve for x
    x = 19,375,713,426.96/159,596.15
  6. Step 6: Final answer
    x = 121,404.65

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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.