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Finding the Fourth Proportional to 120,866.64, 181,298.61 and 73,494.78

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Solution

The fourth proportional to 120,866.64, 181,298.61 and 73,494.78 is: 110,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,866.64 : 181,298.61 = 73,494.78 : x
  2. Step 2: Convert to fraction form
    120,866.64/181,298.61 = 73,494.78/x
  3. Step 3: Cross multiply
    120,866.64x = 181,298.61 × 73,494.78
  4. Step 4: Simplify right side
    120,866.64x = 13,324,501,456.26
  5. Step 5: Solve for x
    x = 13,324,501,456.26/120,866.64
  6. Step 6: Final answer
    x = 110,241.35

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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.