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Finding the Fourth Proportional to 191,805.08, 287,790.60 and 102,954.83

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Solution

The fourth proportional to 191,805.08, 287,790.60 and 102,954.83 is: 154,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,805.08 : 287,790.60 = 102,954.83 : x
  2. Step 2: Convert to fraction form
    191,805.08/287,790.60 = 102,954.83/x
  3. Step 3: Cross multiply
    191,805.08x = 287,790.60 × 102,954.83
  4. Step 4: Simplify right side
    191,805.08x = 29,629,430,859.65
  5. Step 5: Solve for x
    x = 29,629,430,859.65/191,805.08
  6. Step 6: Final answer
    x = 154,476.78

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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.