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Finding the Fourth Proportional to 48,654.87, 72,840.06 and 43,985.58

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Solution

The fourth proportional to 48,654.87, 72,840.06 and 43,985.58 is: 65,849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,654.87 : 72,840.06 = 43,985.58 : x
  2. Step 2: Convert to fraction form
    48,654.87/72,840.06 = 43,985.58/x
  3. Step 3: Cross multiply
    48,654.87x = 72,840.06 × 43,985.58
  4. Step 4: Simplify right side
    48,654.87x = 3,203,912,286.33
  5. Step 5: Solve for x
    x = 3,203,912,286.33/48,654.87
  6. Step 6: Final answer
    x = 65,849.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.