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Finding the Fourth Proportional to 65,611.80, 98,466.30 and 48,115.80

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Solution

The fourth proportional to 65,611.80, 98,466.30 and 48,115.80 is: 72,209.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,611.80 : 98,466.30 = 48,115.80 : x
  2. Step 2: Convert to fraction form
    65,611.80/98,466.30 = 48,115.80/x
  3. Step 3: Cross multiply
    65,611.80x = 98,466.30 × 48,115.80
  4. Step 4: Simplify right side
    65,611.80x = 4,737,784,797.54
  5. Step 5: Solve for x
    x = 4,737,784,797.54/65,611.80
  6. Step 6: Final answer
    x = 72,209.34

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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.