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Finding the Fourth Proportional to 71,844.88, 99,145.87 and 41,647.72

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Solution

The fourth proportional to 71,844.88, 99,145.87 and 41,647.72 is: 57,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,844.88 : 99,145.87 = 41,647.72 : x
  2. Step 2: Convert to fraction form
    71,844.88/99,145.87 = 41,647.72/x
  3. Step 3: Cross multiply
    71,844.88x = 99,145.87 × 41,647.72
  4. Step 4: Simplify right side
    71,844.88x = 4,129,199,432.92
  5. Step 5: Solve for x
    x = 4,129,199,432.92/71,844.88
  6. Step 6: Final answer
    x = 57,473.82

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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.