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Finding the Fourth Proportional to 186,600, 279,898.92 and 68,279.52

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Solution

The fourth proportional to 186,600, 279,898.92 and 68,279.52 is: 102,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,600 : 279,898.92 = 68,279.52 : x
  2. Step 2: Convert to fraction form
    186,600/279,898.92 = 68,279.52/x
  3. Step 3: Cross multiply
    186,600x = 279,898.92 × 68,279.52
  4. Step 4: Simplify right side
    186,600x = 19,111,363,906.12
  5. Step 5: Solve for x
    x = 19,111,363,906.12/186,600
  6. Step 6: Final answer
    x = 102,418.88

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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.