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Finding the Fourth Proportional to 73,970.96, 110,972.86 and 21,376.46

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Solution

The fourth proportional to 73,970.96, 110,972.86 and 21,376.46 is: 32,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,970.96 : 110,972.86 = 21,376.46 : x
  2. Step 2: Convert to fraction form
    73,970.96/110,972.86 = 21,376.46/x
  3. Step 3: Cross multiply
    73,970.96x = 110,972.86 × 21,376.46
  4. Step 4: Simplify right side
    73,970.96x = 2,372,206,902.88
  5. Step 5: Solve for x
    x = 2,372,206,902.88/73,970.96
  6. Step 6: Final answer
    x = 32,069.44

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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.