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Finding the Fourth Proportional to 159,172.82, 219,653.91 and 87,552.84

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Solution

The fourth proportional to 159,172.82, 219,653.91 and 87,552.84 is: 120,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,172.82 : 219,653.91 = 87,552.84 : x
  2. Step 2: Convert to fraction form
    159,172.82/219,653.91 = 87,552.84/x
  3. Step 3: Cross multiply
    159,172.82x = 219,653.91 × 87,552.84
  4. Step 4: Simplify right side
    159,172.82x = 19,231,322,101.57
  5. Step 5: Solve for x
    x = 19,231,322,101.57/159,172.82
  6. Step 6: Final answer
    x = 120,820.39

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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.