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Finding the Fourth Proportional to 79,598.90, 109,845.32 and 43,786.78

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Solution

The fourth proportional to 79,598.90, 109,845.32 and 43,786.78 is: 60,425.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,598.90 : 109,845.32 = 43,786.78 : x
  2. Step 2: Convert to fraction form
    79,598.90/109,845.32 = 43,786.78/x
  3. Step 3: Cross multiply
    79,598.90x = 109,845.32 × 43,786.78
  4. Step 4: Simplify right side
    79,598.90x = 4,809,772,367.32
  5. Step 5: Solve for x
    x = 4,809,772,367.32/79,598.90
  6. Step 6: Final answer
    x = 60,425.11

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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.