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Finding the Fourth Proportional to 185,938.80, 279,167.40 and 115,954.80

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Solution

The fourth proportional to 185,938.80, 279,167.40 and 115,954.80 is: 174,093.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,938.80 : 279,167.40 = 115,954.80 : x
  2. Step 2: Convert to fraction form
    185,938.80/279,167.40 = 115,954.80/x
  3. Step 3: Cross multiply
    185,938.80x = 279,167.40 × 115,954.80
  4. Step 4: Simplify right side
    185,938.80x = 32,370,800,033.52
  5. Step 5: Solve for x
    x = 32,370,800,033.52/185,938.80
  6. Step 6: Final answer
    x = 174,093.84

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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.