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Finding the Fourth Proportional to 79,008.67, 118,488.30 and 26,405.85

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Solution

The fourth proportional to 79,008.67, 118,488.30 and 26,405.85 is: 39,600.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,008.67 : 118,488.30 = 26,405.85 : x
  2. Step 2: Convert to fraction form
    79,008.67/118,488.30 = 26,405.85/x
  3. Step 3: Cross multiply
    79,008.67x = 118,488.30 × 26,405.85
  4. Step 4: Simplify right side
    79,008.67x = 3,128,784,276.56
  5. Step 5: Solve for x
    x = 3,128,784,276.56/79,008.67
  6. Step 6: Final answer
    x = 39,600.52

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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.