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Finding the Fourth Proportional to 186,523.88, 279,727.48 and 81,236.84

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Solution

The fourth proportional to 186,523.88, 279,727.48 and 81,236.84 is: 121,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,523.88 : 279,727.48 = 81,236.84 : x
  2. Step 2: Convert to fraction form
    186,523.88/279,727.48 = 81,236.84/x
  3. Step 3: Cross multiply
    186,523.88x = 279,727.48 × 81,236.84
  4. Step 4: Simplify right side
    186,523.88x = 22,724,176,536.36
  5. Step 5: Solve for x
    x = 22,724,176,536.36/186,523.88
  6. Step 6: Final answer
    x = 121,829.85

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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.