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Finding the Fourth Proportional to 61,362.97, 84,679.20 and 34,504.78

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Solution

The fourth proportional to 61,362.97, 84,679.20 and 34,504.78 is: 47,615.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,362.97 : 84,679.20 = 34,504.78 : x
  2. Step 2: Convert to fraction form
    61,362.97/84,679.20 = 34,504.78/x
  3. Step 3: Cross multiply
    61,362.97x = 84,679.20 × 34,504.78
  4. Step 4: Simplify right side
    61,362.97x = 2,921,836,743.18
  5. Step 5: Solve for x
    x = 2,921,836,743.18/61,362.97
  6. Step 6: Final answer
    x = 47,615.64

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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.