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Finding the Fourth Proportional to 173,279.20, 259,724.40 and 89,006.80

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Solution

The fourth proportional to 173,279.20, 259,724.40 and 89,006.80 is: 133,410.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,279.20 : 259,724.40 = 89,006.80 : x
  2. Step 2: Convert to fraction form
    173,279.20/259,724.40 = 89,006.80/x
  3. Step 3: Cross multiply
    173,279.20x = 259,724.40 × 89,006.80
  4. Step 4: Simplify right side
    173,279.20x = 23,117,237,725.92
  5. Step 5: Solve for x
    x = 23,117,237,725.92/173,279.20
  6. Step 6: Final answer
    x = 133,410.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.