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Finding the Fourth Proportional to 70,243.37, 105,310.28 and 47,694.59

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Solution

The fourth proportional to 70,243.37, 105,310.28 and 47,694.59 is: 71,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,243.37 : 105,310.28 = 47,694.59 : x
  2. Step 2: Convert to fraction form
    70,243.37/105,310.28 = 47,694.59/x
  3. Step 3: Cross multiply
    70,243.37x = 105,310.28 × 47,694.59
  4. Step 4: Simplify right side
    70,243.37x = 5,022,731,009.90
  5. Step 5: Solve for x
    x = 5,022,731,009.90/70,243.37
  6. Step 6: Final answer
    x = 71,504.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.