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Finding the Fourth Proportional to 67,982.52, 93,805.11 and 39,291.51

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Solution

The fourth proportional to 67,982.52, 93,805.11 and 39,291.51 is: 54,216.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,982.52 : 93,805.11 = 39,291.51 : x
  2. Step 2: Convert to fraction form
    67,982.52/93,805.11 = 39,291.51/x
  3. Step 3: Cross multiply
    67,982.52x = 93,805.11 × 39,291.51
  4. Step 4: Simplify right side
    67,982.52x = 3,685,744,417.62
  5. Step 5: Solve for x
    x = 3,685,744,417.62/67,982.52
  6. Step 6: Final answer
    x = 54,216.06

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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.