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Finding the Fourth Proportional to 79,166.76, 118,735.28 and 39,713.28

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Solution

The fourth proportional to 79,166.76, 118,735.28 and 39,713.28 is: 59,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,166.76 : 118,735.28 = 39,713.28 : x
  2. Step 2: Convert to fraction form
    79,166.76/118,735.28 = 39,713.28/x
  3. Step 3: Cross multiply
    79,166.76x = 118,735.28 × 39,713.28
  4. Step 4: Simplify right side
    79,166.76x = 4,715,367,221.95
  5. Step 5: Solve for x
    x = 4,715,367,221.95/79,166.76
  6. Step 6: Final answer
    x = 59,562.46

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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.