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Finding the Fourth Proportional to 61,694.79, 85,138.76 and 33,400.47

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Solution

The fourth proportional to 61,694.79, 85,138.76 and 33,400.47 is: 46,092.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,694.79 : 85,138.76 = 33,400.47 : x
  2. Step 2: Convert to fraction form
    61,694.79/85,138.76 = 33,400.47/x
  3. Step 3: Cross multiply
    61,694.79x = 85,138.76 × 33,400.47
  4. Step 4: Simplify right side
    61,694.79x = 2,843,674,599.22
  5. Step 5: Solve for x
    x = 2,843,674,599.22/61,694.79
  6. Step 6: Final answer
    x = 46,092.62

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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.