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Finding the Fourth Proportional to 79,398.73, 109,563.74 and 43,587.52

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Solution

The fourth proportional to 79,398.73, 109,563.74 and 43,587.52 is: 60,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,398.73 : 109,563.74 = 43,587.52 : x
  2. Step 2: Convert to fraction form
    79,398.73/109,563.74 = 43,587.52/x
  3. Step 3: Cross multiply
    79,398.73x = 109,563.74 × 43,587.52
  4. Step 4: Simplify right side
    79,398.73x = 4,775,611,380.13
  5. Step 5: Solve for x
    x = 4,775,611,380.13/79,398.73
  6. Step 6: Final answer
    x = 60,147.20

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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.