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Finding the Fourth Proportional to 120,981.52, 181,479.44 and 36,744.49

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Solution

The fourth proportional to 120,981.52, 181,479.44 and 36,744.49 is: 55,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,981.52 : 181,479.44 = 36,744.49 : x
  2. Step 2: Convert to fraction form
    120,981.52/181,479.44 = 36,744.49/x
  3. Step 3: Cross multiply
    120,981.52x = 181,479.44 × 36,744.49
  4. Step 4: Simplify right side
    120,981.52x = 6,668,369,468.29
  5. Step 5: Solve for x
    x = 6,668,369,468.29/120,981.52
  6. Step 6: Final answer
    x = 55,118.91

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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.