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Finding the Fourth Proportional to 148,993.19, 205,611.44 and 81,010.83

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Solution

The fourth proportional to 148,993.19, 205,611.44 and 81,010.83 is: 111,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,993.19 : 205,611.44 = 81,010.83 : x
  2. Step 2: Convert to fraction form
    148,993.19/205,611.44 = 81,010.83/x
  3. Step 3: Cross multiply
    148,993.19x = 205,611.44 × 81,010.83
  4. Step 4: Simplify right side
    148,993.19x = 16,656,753,411.90
  5. Step 5: Solve for x
    x = 16,656,753,411.90/148,993.19
  6. Step 6: Final answer
    x = 111,795.40

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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.