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Finding the Fourth Proportional to 61,472.57, 84,840.23 and 34,620.33

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Solution

The fourth proportional to 61,472.57, 84,840.23 and 34,620.33 is: 47,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,472.57 : 84,840.23 = 34,620.33 : x
  2. Step 2: Convert to fraction form
    61,472.57/84,840.23 = 34,620.33/x
  3. Step 3: Cross multiply
    61,472.57x = 84,840.23 × 34,620.33
  4. Step 4: Simplify right side
    61,472.57x = 2,937,196,759.88
  5. Step 5: Solve for x
    x = 2,937,196,759.88/61,472.57
  6. Step 6: Final answer
    x = 47,780.61

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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.