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Finding the Fourth Proportional to 71,873.72, 99,226.86 and 48,040.76

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Solution

The fourth proportional to 71,873.72, 99,226.86 and 48,040.76 is: 66,323.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,873.72 : 99,226.86 = 48,040.76 : x
  2. Step 2: Convert to fraction form
    71,873.72/99,226.86 = 48,040.76/x
  3. Step 3: Cross multiply
    71,873.72x = 99,226.86 × 48,040.76
  4. Step 4: Simplify right side
    71,873.72x = 4,766,933,766.81
  5. Step 5: Solve for x
    x = 4,766,933,766.81/71,873.72
  6. Step 6: Final answer
    x = 66,323.74

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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.