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Finding the Fourth Proportional to 85,354.62, 117,791.19 and 47,628.06

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Solution

The fourth proportional to 85,354.62, 117,791.19 and 47,628.06 is: 65,727.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,354.62 : 117,791.19 = 47,628.06 : x
  2. Step 2: Convert to fraction form
    85,354.62/117,791.19 = 47,628.06/x
  3. Step 3: Cross multiply
    85,354.62x = 117,791.19 × 47,628.06
  4. Step 4: Simplify right side
    85,354.62x = 5,610,165,864.79
  5. Step 5: Solve for x
    x = 5,610,165,864.79/85,354.62
  6. Step 6: Final answer
    x = 65,727.74

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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.