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Finding the Fourth Proportional to 79,090.76, 118,639.50 and 23,687.24

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Solution

The fourth proportional to 79,090.76, 118,639.50 and 23,687.24 is: 35,531.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,090.76 : 118,639.50 = 23,687.24 : x
  2. Step 2: Convert to fraction form
    79,090.76/118,639.50 = 23,687.24/x
  3. Step 3: Cross multiply
    79,090.76x = 118,639.50 × 23,687.24
  4. Step 4: Simplify right side
    79,090.76x = 2,810,242,309.98
  5. Step 5: Solve for x
    x = 2,810,242,309.98/79,090.76
  6. Step 6: Final answer
    x = 35,531.87

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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.