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Finding the Fourth Proportional to 355,841.71, 533,763.51 and 131,104.78

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Solution

The fourth proportional to 355,841.71, 533,763.51 and 131,104.78 is: 196,657.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,841.71 : 533,763.51 = 131,104.78 : x
  2. Step 2: Convert to fraction form
    355,841.71/533,763.51 = 131,104.78/x
  3. Step 3: Cross multiply
    355,841.71x = 533,763.51 × 131,104.78
  4. Step 4: Simplify right side
    355,841.71x = 69,978,947,550.58
  5. Step 5: Solve for x
    x = 69,978,947,550.58/355,841.71
  6. Step 6: Final answer
    x = 196,657.52

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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.