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Finding the Fourth Proportional to 70,346.61, 105,519.51 and 17,755.88

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Solution

The fourth proportional to 70,346.61, 105,519.51 and 17,755.88 is: 26,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,346.61 : 105,519.51 = 17,755.88 : x
  2. Step 2: Convert to fraction form
    70,346.61/105,519.51 = 17,755.88/x
  3. Step 3: Cross multiply
    70,346.61x = 105,519.51 × 17,755.88
  4. Step 4: Simplify right side
    70,346.61x = 1,873,591,229.62
  5. Step 5: Solve for x
    x = 1,873,591,229.62/70,346.61
  6. Step 6: Final answer
    x = 26,633.71

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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.