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Finding the Fourth Proportional to 185,991.66, 279,023.40 and 79,374.06

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Solution

The fourth proportional to 185,991.66, 279,023.40 and 79,374.06 is: 119,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,991.66 : 279,023.40 = 79,374.06 : x
  2. Step 2: Convert to fraction form
    185,991.66/279,023.40 = 79,374.06/x
  3. Step 3: Cross multiply
    185,991.66x = 279,023.40 × 79,374.06
  4. Step 4: Simplify right side
    185,991.66x = 22,147,220,093.00
  5. Step 5: Solve for x
    x = 22,147,220,093.00/185,991.66
  6. Step 6: Final answer
    x = 119,076.42

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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.