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Finding the Fourth Proportional to 68,501.43, 94,531.68 and 38,286.77

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Solution

The fourth proportional to 68,501.43, 94,531.68 and 38,286.77 is: 52,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,501.43 : 94,531.68 = 38,286.77 : x
  2. Step 2: Convert to fraction form
    68,501.43/94,531.68 = 38,286.77/x
  3. Step 3: Cross multiply
    68,501.43x = 94,531.68 × 38,286.77
  4. Step 4: Simplify right side
    68,501.43x = 3,619,312,217.22
  5. Step 5: Solve for x
    x = 3,619,312,217.22/68,501.43
  6. Step 6: Final answer
    x = 52,835.57

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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.