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Finding the Fourth Proportional to 78,524.69, 108,366.95 and 43,600.33

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Solution

The fourth proportional to 78,524.69, 108,366.95 and 43,600.33 is: 60,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,524.69 : 108,366.95 = 43,600.33 : x
  2. Step 2: Convert to fraction form
    78,524.69/108,366.95 = 43,600.33/x
  3. Step 3: Cross multiply
    78,524.69x = 108,366.95 × 43,600.33
  4. Step 4: Simplify right side
    78,524.69x = 4,724,834,781.09
  5. Step 5: Solve for x
    x = 4,724,834,781.09/78,524.69
  6. Step 6: Final answer
    x = 60,170.05

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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.