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Finding the Fourth Proportional to 73,968.96, 110,969.85 and 21,374.46

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Solution

The fourth proportional to 73,968.96, 110,969.85 and 21,374.46 is: 32,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,968.96 : 110,969.85 = 21,374.46 : x
  2. Step 2: Convert to fraction form
    73,968.96/110,969.85 = 21,374.46/x
  3. Step 3: Cross multiply
    73,968.96x = 110,969.85 × 21,374.46
  4. Step 4: Simplify right side
    73,968.96x = 2,371,920,620.03
  5. Step 5: Solve for x
    x = 2,371,920,620.03/73,968.96
  6. Step 6: Final answer
    x = 32,066.43

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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.