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Finding the Fourth Proportional to 713,879.20, 1,068,745.20 and 693,143.20

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Solution

The fourth proportional to 713,879.20, 1,068,745.20 and 693,143.20 is: 1,037,701.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,879.20 : 1,068,745.20 = 693,143.20 : x
  2. Step 2: Convert to fraction form
    713,879.20/1,068,745.20 = 693,143.20/x
  3. Step 3: Cross multiply
    713,879.20x = 1,068,745.20 × 693,143.20
  4. Step 4: Simplify right side
    713,879.20x = 740,793,467,912.64
  5. Step 5: Solve for x
    x = 740,793,467,912.64/713,879.20
  6. Step 6: Final answer
    x = 1,037,701.43

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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.