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Finding the Fourth Proportional to 186,639.54, 279,876.90 and 53,489.58

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Solution

The fourth proportional to 186,639.54, 279,876.90 and 53,489.58 is: 80,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,639.54 : 279,876.90 = 53,489.58 : x
  2. Step 2: Convert to fraction form
    186,639.54/279,876.90 = 53,489.58/x
  3. Step 3: Cross multiply
    186,639.54x = 279,876.90 × 53,489.58
  4. Step 4: Simplify right side
    186,639.54x = 14,970,497,832.70
  5. Step 5: Solve for x
    x = 14,970,497,832.70/186,639.54
  6. Step 6: Final answer
    x = 80,210.75

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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.