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Finding the Fourth Proportional to 186,642.88, 279,906.80 and 53,487.44

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Solution

The fourth proportional to 186,642.88, 279,906.80 and 53,487.44 is: 80,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,642.88 : 279,906.80 = 53,487.44 : x
  2. Step 2: Convert to fraction form
    186,642.88/279,906.80 = 53,487.44/x
  3. Step 3: Cross multiply
    186,642.88x = 279,906.80 × 53,487.44
  4. Step 4: Simplify right side
    186,642.88x = 14,971,498,170.59
  5. Step 5: Solve for x
    x = 14,971,498,170.59/186,642.88
  6. Step 6: Final answer
    x = 80,214.68

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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.