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Finding the Fourth Proportional to 76,591.04, 105,694.62 and 43,057.04

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Solution

The fourth proportional to 76,591.04, 105,694.62 and 43,057.04 is: 59,418.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,591.04 : 105,694.62 = 43,057.04 : x
  2. Step 2: Convert to fraction form
    76,591.04/105,694.62 = 43,057.04/x
  3. Step 3: Cross multiply
    76,591.04x = 105,694.62 × 43,057.04
  4. Step 4: Simplify right side
    76,591.04x = 4,550,897,481.12
  5. Step 5: Solve for x
    x = 4,550,897,481.12/76,591.04
  6. Step 6: Final answer
    x = 59,418.14

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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.