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Finding the Fourth Proportional to 186,335.56, 279,507.90 and 68,006.87

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Solution

The fourth proportional to 186,335.56, 279,507.90 and 68,006.87 is: 102,011.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,335.56 : 279,507.90 = 68,006.87 : x
  2. Step 2: Convert to fraction form
    186,335.56/279,507.90 = 68,006.87/x
  3. Step 3: Cross multiply
    186,335.56x = 279,507.90 × 68,006.87
  4. Step 4: Simplify right side
    186,335.56x = 19,008,456,021.73
  5. Step 5: Solve for x
    x = 19,008,456,021.73/186,335.56
  6. Step 6: Final answer
    x = 102,011.96

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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.