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Finding the Fourth Proportional to 52,167.90, 71,991.03 and 28,293.90

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Solution

The fourth proportional to 52,167.90, 71,991.03 and 28,293.90 is: 39,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,167.90 : 71,991.03 = 28,293.90 : x
  2. Step 2: Convert to fraction form
    52,167.90/71,991.03 = 28,293.90/x
  3. Step 3: Cross multiply
    52,167.90x = 71,991.03 × 28,293.90
  4. Step 4: Simplify right side
    52,167.90x = 2,036,907,003.72
  5. Step 5: Solve for x
    x = 2,036,907,003.72/52,167.90
  6. Step 6: Final answer
    x = 39,045.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.