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Finding the Fourth Proportional to 83,311.90, 124,810.90 and 41,142.62

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Solution

The fourth proportional to 83,311.90, 124,810.90 and 41,142.62 is: 61,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,311.90 : 124,810.90 = 41,142.62 : x
  2. Step 2: Convert to fraction form
    83,311.90/124,810.90 = 41,142.62/x
  3. Step 3: Cross multiply
    83,311.90x = 124,810.90 × 41,142.62
  4. Step 4: Simplify right side
    83,311.90x = 5,135,047,430.56
  5. Step 5: Solve for x
    x = 5,135,047,430.56/83,311.90
  6. Step 6: Final answer
    x = 61,636.42

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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.