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Finding the Fourth Proportional to 140,409.12, 210,800.52 and 73,895.96

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Solution

The fourth proportional to 140,409.12, 210,800.52 and 73,895.96 is: 110,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,409.12 : 210,800.52 = 73,895.96 : x
  2. Step 2: Convert to fraction form
    140,409.12/210,800.52 = 73,895.96/x
  3. Step 3: Cross multiply
    140,409.12x = 210,800.52 × 73,895.96
  4. Step 4: Simplify right side
    140,409.12x = 15,577,306,793.90
  5. Step 5: Solve for x
    x = 15,577,306,793.90/140,409.12
  6. Step 6: Final answer
    x = 110,942.27

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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.