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Finding the Fourth Proportional to 99,611.70, 149,411.07 and 40,452.54

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Solution

The fourth proportional to 99,611.70, 149,411.07 and 40,452.54 is: 60,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.70 : 149,411.07 = 40,452.54 : x
  2. Step 2: Convert to fraction form
    99,611.70/149,411.07 = 40,452.54/x
  3. Step 3: Cross multiply
    99,611.70x = 149,411.07 × 40,452.54
  4. Step 4: Simplify right side
    99,611.70x = 6,044,057,285.62
  5. Step 5: Solve for x
    x = 6,044,057,285.62/99,611.70
  6. Step 6: Final answer
    x = 60,676.18

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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.