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Finding the Fourth Proportional to 159,166.72, 219,648.96 and 87,544.96

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Solution

The fourth proportional to 159,166.72, 219,648.96 and 87,544.96 is: 120,811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,166.72 : 219,648.96 = 87,544.96 : x
  2. Step 2: Convert to fraction form
    159,166.72/219,648.96 = 87,544.96/x
  3. Step 3: Cross multiply
    159,166.72x = 219,648.96 × 87,544.96
  4. Step 4: Simplify right side
    159,166.72x = 19,229,159,417.24
  5. Step 5: Solve for x
    x = 19,229,159,417.24/159,166.72
  6. Step 6: Final answer
    x = 120,811.43

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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.