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Finding the Fourth Proportional to 79,620.64, 109,873.74 and 43,807.30

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Solution

The fourth proportional to 79,620.64, 109,873.74 and 43,807.30 is: 60,452.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,620.64 : 109,873.74 = 43,807.30 : x
  2. Step 2: Convert to fraction form
    79,620.64/109,873.74 = 43,807.30/x
  3. Step 3: Cross multiply
    79,620.64x = 109,873.74 × 43,807.30
  4. Step 4: Simplify right side
    79,620.64x = 4,813,271,890.30
  5. Step 5: Solve for x
    x = 4,813,271,890.30/79,620.64
  6. Step 6: Final answer
    x = 60,452.56

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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.