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Finding the Fourth Proportional to 71,611.64, 98,801.76 and 41,385.96

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Solution

The fourth proportional to 71,611.64, 98,801.76 and 41,385.96 is: 57,099.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.64 : 98,801.76 = 41,385.96 : x
  2. Step 2: Convert to fraction form
    71,611.64/98,801.76 = 41,385.96/x
  3. Step 3: Cross multiply
    71,611.64x = 98,801.76 × 41,385.96
  4. Step 4: Simplify right side
    71,611.64x = 4,089,005,687.29
  5. Step 5: Solve for x
    x = 4,089,005,687.29/71,611.64
  6. Step 6: Final answer
    x = 57,099.74

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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.