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Finding the Fourth Proportional to 159,896.32, 220,653.44 and 87,296.74

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Solution

The fourth proportional to 159,896.32, 220,653.44 and 87,296.74 is: 120,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,896.32 : 220,653.44 = 87,296.74 : x
  2. Step 2: Convert to fraction form
    159,896.32/220,653.44 = 87,296.74/x
  3. Step 3: Cross multiply
    159,896.32x = 220,653.44 × 87,296.74
  4. Step 4: Simplify right side
    159,896.32x = 19,262,325,981.79
  5. Step 5: Solve for x
    x = 19,262,325,981.79/159,896.32
  6. Step 6: Final answer
    x = 120,467.60

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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.