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Finding the Fourth Proportional to 1,254,778.92, 1,731,605.88 and 681,819.09

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Solution

The fourth proportional to 1,254,778.92, 1,731,605.88 and 681,819.09 is: 940,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,778.92 : 1,731,605.88 = 681,819.09 : x
  2. Step 2: Convert to fraction form
    1,254,778.92/1,731,605.88 = 681,819.09/x
  3. Step 3: Cross multiply
    1,254,778.92x = 1,731,605.88 × 681,819.09
  4. Step 4: Simplify right side
    1,254,778.92x = 1,180,641,945,340.25
  5. Step 5: Solve for x
    x = 1,180,641,945,340.25/1,254,778.92
  6. Step 6: Final answer
    x = 940,916.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.