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Finding the Fourth Proportional to 61,679.57, 85,112.21 and 34,816.82

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Solution

The fourth proportional to 61,679.57, 85,112.21 and 34,816.82 is: 48,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.57 : 85,112.21 = 34,816.82 : x
  2. Step 2: Convert to fraction form
    61,679.57/85,112.21 = 34,816.82/x
  3. Step 3: Cross multiply
    61,679.57x = 85,112.21 × 34,816.82
  4. Step 4: Simplify right side
    61,679.57x = 2,963,335,895.73
  5. Step 5: Solve for x
    x = 2,963,335,895.73/61,679.57
  6. Step 6: Final answer
    x = 48,044.05

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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.