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Finding the Fourth Proportional to 186,672.29, 279,920.86 and 68,260.82

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Solution

The fourth proportional to 186,672.29, 279,920.86 and 68,260.82 is: 102,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,672.29 : 279,920.86 = 68,260.82 : x
  2. Step 2: Convert to fraction form
    186,672.29/279,920.86 = 68,260.82/x
  3. Step 3: Cross multiply
    186,672.29x = 279,920.86 × 68,260.82
  4. Step 4: Simplify right side
    186,672.29x = 19,107,625,868.45
  5. Step 5: Solve for x
    x = 19,107,625,868.45/186,672.29
  6. Step 6: Final answer
    x = 102,359.20

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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.