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Finding the Fourth Proportional to 120,871.91, 181,327.52 and 36,612.34

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Solution

The fourth proportional to 120,871.91, 181,327.52 and 36,612.34 is: 54,924.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,871.91 : 181,327.52 = 36,612.34 : x
  2. Step 2: Convert to fraction form
    120,871.91/181,327.52 = 36,612.34/x
  3. Step 3: Cross multiply
    120,871.91x = 181,327.52 × 36,612.34
  4. Step 4: Simplify right side
    120,871.91x = 6,638,824,451.81
  5. Step 5: Solve for x
    x = 6,638,824,451.81/120,871.91
  6. Step 6: Final answer
    x = 54,924.46

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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.