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Finding the Fourth Proportional to 260,067.31, 390,154.43 and 117,844.27

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Solution

The fourth proportional to 260,067.31, 390,154.43 and 117,844.27 is: 176,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,067.31 : 390,154.43 = 117,844.27 : x
  2. Step 2: Convert to fraction form
    260,067.31/390,154.43 = 117,844.27/x
  3. Step 3: Cross multiply
    260,067.31x = 390,154.43 × 117,844.27
  4. Step 4: Simplify right side
    260,067.31x = 45,977,463,990.62
  5. Step 5: Solve for x
    x = 45,977,463,990.62/260,067.31
  6. Step 6: Final answer
    x = 176,790.63

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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.