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Finding the Fourth Proportional to 186,109.20, 279,163.80 and 167,446.80

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Solution

The fourth proportional to 186,109.20, 279,163.80 and 167,446.80 is: 251,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,109.20 : 279,163.80 = 167,446.80 : x
  2. Step 2: Convert to fraction form
    186,109.20/279,163.80 = 167,446.80/x
  3. Step 3: Cross multiply
    186,109.20x = 279,163.80 × 167,446.80
  4. Step 4: Simplify right side
    186,109.20x = 46,745,084,985.84
  5. Step 5: Solve for x
    x = 46,745,084,985.84/186,109.20
  6. Step 6: Final answer
    x = 251,170.20

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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.