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Finding the Fourth Proportional to 61,420.92, 84,759.87 and 34,563.41

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Solution

The fourth proportional to 61,420.92, 84,759.87 and 34,563.41 is: 47,696.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,420.92 : 84,759.87 = 34,563.41 : x
  2. Step 2: Convert to fraction form
    61,420.92/84,759.87 = 34,563.41/x
  3. Step 3: Cross multiply
    61,420.92x = 84,759.87 × 34,563.41
  4. Step 4: Simplify right side
    61,420.92x = 2,929,590,138.36
  5. Step 5: Solve for x
    x = 2,929,590,138.36/61,420.92
  6. Step 6: Final answer
    x = 47,696.95

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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.