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Finding the Fourth Proportional to 61,796.53, 85,288.29 and 39,137.62

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Solution

The fourth proportional to 61,796.53, 85,288.29 and 39,137.62 is: 54,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,796.53 : 85,288.29 = 39,137.62 : x
  2. Step 2: Convert to fraction form
    61,796.53/85,288.29 = 39,137.62/x
  3. Step 3: Cross multiply
    61,796.53x = 85,288.29 × 39,137.62
  4. Step 4: Simplify right side
    61,796.53x = 3,337,980,258.03
  5. Step 5: Solve for x
    x = 3,337,980,258.03/61,796.53
  6. Step 6: Final answer
    x = 54,015.66

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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.