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Finding the Fourth Proportional to 65,391.35, 98,087.93 and 18,644.22

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Solution

The fourth proportional to 65,391.35, 98,087.93 and 18,644.22 is: 27,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,391.35 : 98,087.93 = 18,644.22 : x
  2. Step 2: Convert to fraction form
    65,391.35/98,087.93 = 18,644.22/x
  3. Step 3: Cross multiply
    65,391.35x = 98,087.93 × 18,644.22
  4. Step 4: Simplify right side
    65,391.35x = 1,828,773,092.18
  5. Step 5: Solve for x
    x = 1,828,773,092.18/65,391.35
  6. Step 6: Final answer
    x = 27,966.59

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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.