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Finding the Fourth Proportional to 79,296.89, 109,431.20 and 43,484.76

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Solution

The fourth proportional to 79,296.89, 109,431.20 and 43,484.76 is: 60,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,296.89 : 109,431.20 = 43,484.76 : x
  2. Step 2: Convert to fraction form
    79,296.89/109,431.20 = 43,484.76/x
  3. Step 3: Cross multiply
    79,296.89x = 109,431.20 × 43,484.76
  4. Step 4: Simplify right side
    79,296.89x = 4,758,589,577.22
  5. Step 5: Solve for x
    x = 4,758,589,577.22/79,296.89
  6. Step 6: Final answer
    x = 60,009.79

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1.5x scale

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.