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Finding the Fourth Proportional to 173,876.80, 260,815.20 and 89,636.80

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Solution

The fourth proportional to 173,876.80, 260,815.20 and 89,636.80 is: 134,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,876.80 : 260,815.20 = 89,636.80 : x
  2. Step 2: Convert to fraction form
    173,876.80/260,815.20 = 89,636.80/x
  3. Step 3: Cross multiply
    173,876.80x = 260,815.20 × 89,636.80
  4. Step 4: Simplify right side
    173,876.80x = 23,378,639,919.36
  5. Step 5: Solve for x
    x = 23,378,639,919.36/173,876.80
  6. Step 6: Final answer
    x = 134,455.20

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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.