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Finding the Fourth Proportional to 65,391.25, 98,087.79 and 18,644.14

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Solution

The fourth proportional to 65,391.25, 98,087.79 and 18,644.14 is: 27,966.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,391.25 : 98,087.79 = 18,644.14 : x
  2. Step 2: Convert to fraction form
    65,391.25/98,087.79 = 18,644.14/x
  3. Step 3: Cross multiply
    65,391.25x = 98,087.79 × 18,644.14
  4. Step 4: Simplify right side
    65,391.25x = 1,828,762,489.05
  5. Step 5: Solve for x
    x = 1,828,762,489.05/65,391.25
  6. Step 6: Final answer
    x = 27,966.47

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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.