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Finding the Fourth Proportional to 79,961, 110,355.90 and 46,427

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Solution

The fourth proportional to 79,961, 110,355.90 and 46,427 is: 64,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,961 : 110,355.90 = 46,427 : x
  2. Step 2: Convert to fraction form
    79,961/110,355.90 = 46,427/x
  3. Step 3: Cross multiply
    79,961x = 110,355.90 × 46,427
  4. Step 4: Simplify right side
    79,961x = 5,123,493,369.30
  5. Step 5: Solve for x
    x = 5,123,493,369.30/79,961
  6. Step 6: Final answer
    x = 64,074.90

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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.