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Finding the Fourth Proportional to 101,023.52, 139,406.13 and 55,701.99

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Solution

The fourth proportional to 101,023.52, 139,406.13 and 55,701.99 is: 76,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,023.52 : 139,406.13 = 55,701.99 : x
  2. Step 2: Convert to fraction form
    101,023.52/139,406.13 = 55,701.99/x
  3. Step 3: Cross multiply
    101,023.52x = 139,406.13 × 55,701.99
  4. Step 4: Simplify right side
    101,023.52x = 7,765,198,859.20
  5. Step 5: Solve for x
    x = 7,765,198,859.20/101,023.52
  6. Step 6: Final answer
    x = 76,865.26

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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.