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Finding the Fourth Proportional to 99,910.58, 137,874.96 and 54,587.58

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Solution

The fourth proportional to 99,910.58, 137,874.96 and 54,587.58 is: 75,329.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,910.58 : 137,874.96 = 54,587.58 : x
  2. Step 2: Convert to fraction form
    99,910.58/137,874.96 = 54,587.58/x
  3. Step 3: Cross multiply
    99,910.58x = 137,874.96 × 54,587.58
  4. Step 4: Simplify right side
    99,910.58x = 7,526,260,409.00
  5. Step 5: Solve for x
    x = 7,526,260,409.00/99,910.58
  6. Step 6: Final answer
    x = 75,329.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.