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Finding the Fourth Proportional to 73,679.80, 101,690.36 and 43,472.54

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Solution

The fourth proportional to 73,679.80, 101,690.36 and 43,472.54 is: 59,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,679.80 : 101,690.36 = 43,472.54 : x
  2. Step 2: Convert to fraction form
    73,679.80/101,690.36 = 43,472.54/x
  3. Step 3: Cross multiply
    73,679.80x = 101,690.36 × 43,472.54
  4. Step 4: Simplify right side
    73,679.80x = 4,420,738,242.71
  5. Step 5: Solve for x
    x = 4,420,738,242.71/73,679.80
  6. Step 6: Final answer
    x = 59,999.32

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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.