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Finding the Fourth Proportional to 79,590.56, 109,832.63 and 43,780.55

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Solution

The fourth proportional to 79,590.56, 109,832.63 and 43,780.55 is: 60,415.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590.56 : 109,832.63 = 43,780.55 : x
  2. Step 2: Convert to fraction form
    79,590.56/109,832.63 = 43,780.55/x
  3. Step 3: Cross multiply
    79,590.56x = 109,832.63 × 43,780.55
  4. Step 4: Simplify right side
    79,590.56x = 4,808,532,181.28
  5. Step 5: Solve for x
    x = 4,808,532,181.28/79,590.56
  6. Step 6: Final answer
    x = 60,415.86

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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.