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Finding the Fourth Proportional to 67,652.03, 101,466.17 and 20,905.31

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Solution

The fourth proportional to 67,652.03, 101,466.17 and 20,905.31 is: 31,354.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,652.03 : 101,466.17 = 20,905.31 : x
  2. Step 2: Convert to fraction form
    67,652.03/101,466.17 = 20,905.31/x
  3. Step 3: Cross multiply
    67,652.03x = 101,466.17 × 20,905.31
  4. Step 4: Simplify right side
    67,652.03x = 2,121,181,633.84
  5. Step 5: Solve for x
    x = 2,121,181,633.84/67,652.03
  6. Step 6: Final answer
    x = 31,354.29

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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.