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Finding the Fourth Proportional to 99,858.48, 149,853.18 and 36,679.12

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Solution

The fourth proportional to 99,858.48, 149,853.18 and 36,679.12 is: 55,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,858.48 : 149,853.18 = 36,679.12 : x
  2. Step 2: Convert to fraction form
    99,858.48/149,853.18 = 36,679.12/x
  3. Step 3: Cross multiply
    99,858.48x = 149,853.18 × 36,679.12
  4. Step 4: Simplify right side
    99,858.48x = 5,496,483,246.28
  5. Step 5: Solve for x
    x = 5,496,483,246.28/99,858.48
  6. Step 6: Final answer
    x = 55,042.73

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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.