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Finding the Fourth Proportional to 45,205.80, 67,759.44 and 38,611.98

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Solution

The fourth proportional to 45,205.80, 67,759.44 and 38,611.98 is: 57,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,205.80 : 67,759.44 = 38,611.98 : x
  2. Step 2: Convert to fraction form
    45,205.80/67,759.44 = 38,611.98/x
  3. Step 3: Cross multiply
    45,205.80x = 67,759.44 × 38,611.98
  4. Step 4: Simplify right side
    45,205.80x = 2,616,326,142.09
  5. Step 5: Solve for x
    x = 2,616,326,142.09/45,205.80
  6. Step 6: Final answer
    x = 57,875.90

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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.