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Finding the Fourth Proportional to 65,960.73, 98,885.61 and 21,563.28

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Solution

The fourth proportional to 65,960.73, 98,885.61 and 21,563.28 is: 32,326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,960.73 : 98,885.61 = 21,563.28 : x
  2. Step 2: Convert to fraction form
    65,960.73/98,885.61 = 21,563.28/x
  3. Step 3: Cross multiply
    65,960.73x = 98,885.61 × 21,563.28
  4. Step 4: Simplify right side
    65,960.73x = 2,132,298,096.40
  5. Step 5: Solve for x
    x = 2,132,298,096.40/65,960.73
  6. Step 6: Final answer
    x = 32,326.78

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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.