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Finding the Fourth Proportional to 78,698.62, 108,591.77 and 44,236.53

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Solution

The fourth proportional to 78,698.62, 108,591.77 and 44,236.53 is: 61,039.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698.62 : 108,591.77 = 44,236.53 : x
  2. Step 2: Convert to fraction form
    78,698.62/108,591.77 = 44,236.53/x
  3. Step 3: Cross multiply
    78,698.62x = 108,591.77 × 44,236.53
  4. Step 4: Simplify right side
    78,698.62x = 4,803,723,201.95
  5. Step 5: Solve for x
    x = 4,803,723,201.95/78,698.62
  6. Step 6: Final answer
    x = 61,039.48

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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.