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Finding the Fourth Proportional to 159,095.93, 219,553.21 and 87,480.57

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Solution

The fourth proportional to 159,095.93, 219,553.21 and 87,480.57 is: 120,723.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,095.93 : 219,553.21 = 87,480.57 : x
  2. Step 2: Convert to fraction form
    159,095.93/219,553.21 = 87,480.57/x
  3. Step 3: Cross multiply
    159,095.93x = 219,553.21 × 87,480.57
  4. Step 4: Simplify right side
    159,095.93x = 19,206,638,858.36
  5. Step 5: Solve for x
    x = 19,206,638,858.36/159,095.93
  6. Step 6: Final answer
    x = 120,723.63

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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.