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Finding the Fourth Proportional to 68,708.85, 94,820.94 and 38,494.43

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Solution

The fourth proportional to 68,708.85, 94,820.94 and 38,494.43 is: 53,123.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,708.85 : 94,820.94 = 38,494.43 : x
  2. Step 2: Convert to fraction form
    68,708.85/94,820.94 = 38,494.43/x
  3. Step 3: Cross multiply
    68,708.85x = 94,820.94 × 38,494.43
  4. Step 4: Simplify right side
    68,708.85x = 3,650,077,563.26
  5. Step 5: Solve for x
    x = 3,650,077,563.26/68,708.85
  6. Step 6: Final answer
    x = 53,123.83

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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.