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Finding the Fourth Proportional to 193,511.85, 289,516.70 and 169,639.80

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Solution

The fourth proportional to 193,511.85, 289,516.70 and 169,639.80 is: 253,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,511.85 : 289,516.70 = 169,639.80 : x
  2. Step 2: Convert to fraction form
    193,511.85/289,516.70 = 169,639.80/x
  3. Step 3: Cross multiply
    193,511.85x = 289,516.70 × 169,639.80
  4. Step 4: Simplify right side
    193,511.85x = 49,113,552,788.88
  5. Step 5: Solve for x
    x = 49,113,552,788.88/193,511.85
  6. Step 6: Final answer
    x = 253,801.27

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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.