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Finding the Fourth Proportional to 1,583,601.78, 2,375,734.82 and 685,171.24

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Solution

The fourth proportional to 1,583,601.78, 2,375,734.82 and 685,171.24 is: 1,027,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583,601.78 : 2,375,734.82 = 685,171.24 : x
  2. Step 2: Convert to fraction form
    1,583,601.78/2,375,734.82 = 685,171.24/x
  3. Step 3: Cross multiply
    1,583,601.78x = 2,375,734.82 × 685,171.24
  4. Step 4: Simplify right side
    1,583,601.78x = 1,627,785,172,530.58
  5. Step 5: Solve for x
    x = 1,627,785,172,530.58/1,583,601.78
  6. Step 6: Final answer
    x = 1,027,900.57

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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.