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Finding the Fourth Proportional to 21,968.52, 32,957.03 and 7,173.46

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Solution

The fourth proportional to 21,968.52, 32,957.03 and 7,173.46 is: 10,761.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.52 : 32,957.03 = 7,173.46 : x
  2. Step 2: Convert to fraction form
    21,968.52/32,957.03 = 7,173.46/x
  3. Step 3: Cross multiply
    21,968.52x = 32,957.03 × 7,173.46
  4. Step 4: Simplify right side
    21,968.52x = 236,415,936.42
  5. Step 5: Solve for x
    x = 236,415,936.42/21,968.52
  6. Step 6: Final answer
    x = 10,761.58

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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.