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Finding the Fourth Proportional to 206,387.14, 309,559.96 and 56,642.48

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Solution

The fourth proportional to 206,387.14, 309,559.96 and 56,642.48 is: 84,958.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,387.14 : 309,559.96 = 56,642.48 : x
  2. Step 2: Convert to fraction form
    206,387.14/309,559.96 = 56,642.48/x
  3. Step 3: Cross multiply
    206,387.14x = 309,559.96 × 56,642.48
  4. Step 4: Simplify right side
    206,387.14x = 17,534,243,843.10
  5. Step 5: Solve for x
    x = 17,534,243,843.10/206,387.14
  6. Step 6: Final answer
    x = 84,958.03

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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.