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Finding the Fourth Proportional to 79,043.12, 118,611.48 and 29,158.28

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Solution

The fourth proportional to 79,043.12, 118,611.48 and 29,158.28 is: 43,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,043.12 : 118,611.48 = 29,158.28 : x
  2. Step 2: Convert to fraction form
    79,043.12/118,611.48 = 29,158.28/x
  3. Step 3: Cross multiply
    79,043.12x = 118,611.48 × 29,158.28
  4. Step 4: Simplify right side
    79,043.12x = 3,458,506,745.05
  5. Step 5: Solve for x
    x = 3,458,506,745.05/79,043.12
  6. Step 6: Final answer
    x = 43,754.68

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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.