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Finding the Fourth Proportional to 191,409.87, 287,092.94 and 51,179.43

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Solution

The fourth proportional to 191,409.87, 287,092.94 and 51,179.43 is: 76,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,409.87 : 287,092.94 = 51,179.43 : x
  2. Step 2: Convert to fraction form
    191,409.87/287,092.94 = 51,179.43/x
  3. Step 3: Cross multiply
    191,409.87x = 287,092.94 × 51,179.43
  4. Step 4: Simplify right side
    191,409.87x = 14,693,253,026.22
  5. Step 5: Solve for x
    x = 14,693,253,026.22/191,409.87
  6. Step 6: Final answer
    x = 76,763.30

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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.