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Finding the Fourth Proportional to 101,171.44, 139,610.60 and 55,848.30

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Solution

The fourth proportional to 101,171.44, 139,610.60 and 55,848.30 is: 77,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,171.44 : 139,610.60 = 55,848.30 : x
  2. Step 2: Convert to fraction form
    101,171.44/139,610.60 = 55,848.30/x
  3. Step 3: Cross multiply
    101,171.44x = 139,610.60 × 55,848.30
  4. Step 4: Simplify right side
    101,171.44x = 7,797,014,671.98
  5. Step 5: Solve for x
    x = 7,797,014,671.98/101,171.44
  6. Step 6: Final answer
    x = 77,067.35

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1.5x scale

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.