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Finding the Fourth Proportional to 192,956.72, 289,430.89 and 66,592.71

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Solution

The fourth proportional to 192,956.72, 289,430.89 and 66,592.71 is: 99,887.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,956.72 : 289,430.89 = 66,592.71 : x
  2. Step 2: Convert to fraction form
    192,956.72/289,430.89 = 66,592.71/x
  3. Step 3: Cross multiply
    192,956.72x = 289,430.89 × 66,592.71
  4. Step 4: Simplify right side
    192,956.72x = 19,273,987,156.33
  5. Step 5: Solve for x
    x = 19,273,987,156.33/192,956.72
  6. Step 6: Final answer
    x = 99,887.62

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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.