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Finding the Fourth Proportional to 65,987.85, 98,962.17 and 18,599.51

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Solution

The fourth proportional to 65,987.85, 98,962.17 and 18,599.51 is: 27,893.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.85 : 98,962.17 = 18,599.51 : x
  2. Step 2: Convert to fraction form
    65,987.85/98,962.17 = 18,599.51/x
  3. Step 3: Cross multiply
    65,987.85x = 98,962.17 × 18,599.51
  4. Step 4: Simplify right side
    65,987.85x = 1,840,647,375.73
  5. Step 5: Solve for x
    x = 1,840,647,375.73/65,987.85
  6. Step 6: Final answer
    x = 27,893.73

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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.