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Finding the Fourth Proportional to 159,226.88, 219,746.40 and 87,620.48

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Solution

The fourth proportional to 159,226.88, 219,746.40 and 87,620.48 is: 120,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,226.88 : 219,746.40 = 87,620.48 : x
  2. Step 2: Convert to fraction form
    159,226.88/219,746.40 = 87,620.48/x
  3. Step 3: Cross multiply
    159,226.88x = 219,746.40 × 87,620.48
  4. Step 4: Simplify right side
    159,226.88x = 19,254,285,046.27
  5. Step 5: Solve for x
    x = 19,254,285,046.27/159,226.88
  6. Step 6: Final answer
    x = 120,923.58

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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.