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Finding the Fourth Proportional to 140,608.85, 210,935.25 and 45,817.02

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Solution

The fourth proportional to 140,608.85, 210,935.25 and 45,817.02 is: 68,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,608.85 : 210,935.25 = 45,817.02 : x
  2. Step 2: Convert to fraction form
    140,608.85/210,935.25 = 45,817.02/x
  3. Step 3: Cross multiply
    140,608.85x = 210,935.25 × 45,817.02
  4. Step 4: Simplify right side
    140,608.85x = 9,664,424,567.96
  5. Step 5: Solve for x
    x = 9,664,424,567.96/140,608.85
  6. Step 6: Final answer
    x = 68,732.69

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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.