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Finding the Fourth Proportional to 186,579.38, 279,912.81 and 61,920.38

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Solution

The fourth proportional to 186,579.38, 279,912.81 and 61,920.38 is: 92,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,579.38 : 279,912.81 = 61,920.38 : x
  2. Step 2: Convert to fraction form
    186,579.38/279,912.81 = 61,920.38/x
  3. Step 3: Cross multiply
    186,579.38x = 279,912.81 × 61,920.38
  4. Step 4: Simplify right side
    186,579.38x = 17,332,306,162.50
  5. Step 5: Solve for x
    x = 17,332,306,162.50/186,579.38
  6. Step 6: Final answer
    x = 92,895.08

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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.