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Finding the Fourth Proportional to 85,913.62, 118,561.43 and 47,673.31

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Solution

The fourth proportional to 85,913.62, 118,561.43 and 47,673.31 is: 65,789.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,913.62 : 118,561.43 = 47,673.31 : x
  2. Step 2: Convert to fraction form
    85,913.62/118,561.43 = 47,673.31/x
  3. Step 3: Cross multiply
    85,913.62x = 118,561.43 × 47,673.31
  4. Step 4: Simplify right side
    85,913.62x = 5,652,215,806.43
  5. Step 5: Solve for x
    x = 5,652,215,806.43/85,913.62
  6. Step 6: Final answer
    x = 65,789.52

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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.