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Finding the Fourth Proportional to 72,817.51, 109,086.31 and 44,655.44

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Solution

The fourth proportional to 72,817.51, 109,086.31 and 44,655.44 is: 66,897.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,817.51 : 109,086.31 = 44,655.44 : x
  2. Step 2: Convert to fraction form
    72,817.51/109,086.31 = 44,655.44/x
  3. Step 3: Cross multiply
    72,817.51x = 109,086.31 × 44,655.44
  4. Step 4: Simplify right side
    72,817.51x = 4,871,297,171.03
  5. Step 5: Solve for x
    x = 4,871,297,171.03/72,817.51
  6. Step 6: Final answer
    x = 66,897.33

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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.