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Finding the Fourth Proportional to 99,958.19, 149,863.21 and 60,505.97

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Solution

The fourth proportional to 99,958.19, 149,863.21 and 60,505.97 is: 90,714.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,958.19 : 149,863.21 = 60,505.97 : x
  2. Step 2: Convert to fraction form
    99,958.19/149,863.21 = 60,505.97/x
  3. Step 3: Cross multiply
    99,958.19x = 149,863.21 × 60,505.97
  4. Step 4: Simplify right side
    99,958.19x = 9,067,617,987.78
  5. Step 5: Solve for x
    x = 9,067,617,987.78/99,958.19
  6. Step 6: Final answer
    x = 90,714.11

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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.