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Finding the Fourth Proportional to 56,793.57, 78,375.03 and 31,643.07

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Solution

The fourth proportional to 56,793.57, 78,375.03 and 31,643.07 is: 43,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,793.57 : 78,375.03 = 31,643.07 : x
  2. Step 2: Convert to fraction form
    56,793.57/78,375.03 = 31,643.07/x
  3. Step 3: Cross multiply
    56,793.57x = 78,375.03 × 31,643.07
  4. Step 4: Simplify right side
    56,793.57x = 2,480,026,560.54
  5. Step 5: Solve for x
    x = 2,480,026,560.54/56,793.57
  6. Step 6: Final answer
    x = 43,667.38

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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.