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Finding the Fourth Proportional to 71,861.22, 99,169.52 and 41,648.63

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Solution

The fourth proportional to 71,861.22, 99,169.52 and 41,648.63 is: 57,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.22 : 99,169.52 = 41,648.63 : x
  2. Step 2: Convert to fraction form
    71,861.22/99,169.52 = 41,648.63/x
  3. Step 3: Cross multiply
    71,861.22x = 99,169.52 × 41,648.63
  4. Step 4: Simplify right side
    71,861.22x = 4,130,273,941.67
  5. Step 5: Solve for x
    x = 4,130,273,941.67/71,861.22
  6. Step 6: Final answer
    x = 57,475.70

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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.