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Finding the Fourth Proportional to 1,225,993.92, 1,691,845.08 and 709,769.64

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Solution

The fourth proportional to 1,225,993.92, 1,691,845.08 and 709,769.64 is: 979,466.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,993.92 : 1,691,845.08 = 709,769.64 : x
  2. Step 2: Convert to fraction form
    1,225,993.92/1,691,845.08 = 709,769.64/x
  3. Step 3: Cross multiply
    1,225,993.92x = 1,691,845.08 × 709,769.64
  4. Step 4: Simplify right side
    1,225,993.92x = 1,200,820,273,367.37
  5. Step 5: Solve for x
    x = 1,200,820,273,367.37/1,225,993.92
  6. Step 6: Final answer
    x = 979,466.74

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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.