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Finding the Fourth Proportional to 79,149.22, 118,691.93 and 28,533.84

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Solution

The fourth proportional to 79,149.22, 118,691.93 and 28,533.84 is: 42,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,149.22 : 118,691.93 = 28,533.84 : x
  2. Step 2: Convert to fraction form
    79,149.22/118,691.93 = 28,533.84/x
  3. Step 3: Cross multiply
    79,149.22x = 118,691.93 × 28,533.84
  4. Step 4: Simplify right side
    79,149.22x = 3,386,736,166.15
  5. Step 5: Solve for x
    x = 3,386,736,166.15/79,149.22
  6. Step 6: Final answer
    x = 42,789.26

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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.