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Finding the Fourth Proportional to 103,706.80, 155,171.40 and 94,375.60

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Solution

The fourth proportional to 103,706.80, 155,171.40 and 94,375.60 is: 141,209.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,706.80 : 155,171.40 = 94,375.60 : x
  2. Step 2: Convert to fraction form
    103,706.80/155,171.40 = 94,375.60/x
  3. Step 3: Cross multiply
    103,706.80x = 155,171.40 × 94,375.60
  4. Step 4: Simplify right side
    103,706.80x = 14,644,393,977.84
  5. Step 5: Solve for x
    x = 14,644,393,977.84/103,706.80
  6. Step 6: Final answer
    x = 141,209.58

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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.